DGGV E-Publikationen


2D finite-element modelling of the interaction between poroelastic effects and viscoelastic relaxation during the seismic cycle
2021
Jill Peikert1, Andrea Hampel1, Meike Bagge2

The analysis of Coulomb stress changes has become an important tool for seismic hazard evaluation because such stress changes may trigger or delay next earthquakes. Processes that can cause significant…

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3D Basin modelling of the northern Upper Rhine Graben : insights on geothermal fluid pathways
2021
Gillian BETHUNE1, Adriana LEMGRUBER-TRABY2, Claire BOSSENNEC3, Kristian BÄR3, Jeroen VAN DER VAART3, Christine SOUQUE2, Renaud DIVIES2

The area of the Upper Rhine Graben (URG) is known for its geothermal potential. However, the recent interest for lithium co-production from geothermal brines raises questions about the quantification and…

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3D Digital Sedimentary Petrology Models
2021
Robert Lander1, Linda Bonnell1, James Guilkey2

“Digital sedimentary petrology” models represent the microstructure of clastic rocks in 3D and use forward process models to simulate diagenesis in response to evolving burial conditions. This modeling approach predicts…

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3D geological modeling of graben structures in northern Hesse – concept, methods and first results
2021
Ina Lewin1, Rouwen Lehné2, Heiner Heggemann2

For some years now, the Hessian Agency for Nature Conservation, Environment and Geology (HLNUG) is focusing its 3D-modeling activities on urban areas, aiming to contribute to both integrated modeling and…

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3D lithofacies modelling and quantitative fault seal analysis in the Altmark region (North German Basin)
2021
Jacob Waechter, Christian Olaf Mueller, Alexander Malz

Attributed 3D volumetric models are important tools for geothermal exploration, subsurface storage of natural gases and waste and for risk management (e.g. contamination of ground water or induced seismicity). Of…

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3D Rocks, 3D Outcrops, and Virtual Field Trips
2021
Sara Carena

Geoscience teaching has not kept up with technology. The ability to visualize objects in 3D is fundamental in geology, and yet we have hardly integrated any 3D tools in our…

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A 3.77 (or possibly 4.28) billion year history of microbial communities associated with marine hydrothermal vents
2021
Crispin Thomas Stephen Little

Modern hydrothermal vents provide diverse environments for microorganisms. Here there is a large phylogenetic and physiological diversity of bacteria and archaea, occurring in a wide range habitats. An assumption is…

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A 5.3-million-year history of monsoonal precipitation in northwestern Australia
2020
Jan-Berend Willem Stuut (1,2,3), Patrick De Deckker (4), Mariem Saavedra-Pellitero (2,5), Franck Bassinot (6), Anna Joy Drury (2,7), Maureen Walczak (4,8) & Kana Nagashima (9)

Australia is the driest inhabited continent on the planet, with its moisture mostly sourced from the tropical monsoon in the north and the southern westerlies in the south. The continent…

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A co-ordinated German approach to non-traditional tertiary geoscience (field) education?
2020
Virginia Gail Toy

The restrictions in place due to the COVID epidemic have forced us to develop non-traditional solutions to teach field geology in the last few months, such as virtual field excursions,…

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A Gaussian process regression model to determine solubility of calcium sulfate in aqueous fluids
2021
Ali Sadighi, Reza Taherdangkoo, Christoph Butscher

The swelling of clay-sulfate rocks is a well-known phenomenon often causing threats to the success of different projects, for instance, geothermal drillings triggered swelling and ground heave with dramatic damages…

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A global rate of denudation from cosmogenic nuclides in the Earth’s largest rivers
2021
Hella Wittmann1, Marcus Oelze1, Jerome Gaillardet2, Eduardo Garzanti3, Friedhelm von Blanckenburg1,4

Cosmogenic nuclide analysis in sediment from the Earth’s largest rivers yields mean denudation rates of the sediment-producing areas that average out local variations commonly found in small rivers. Using this…

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A global review of carbonatite-hosted fluid inclusions and the role of fluid release on carbonatite magma ascent
2021
Benjamin Florian Walter1, Johannes Giebel2,3, Matthew Steele-MacInnis4, Michael Marks5, Jochen Kolb1, Gregor Markl5

Carbonatites crystallize from mantle-derived carbonate- and volatile-rich melts that exsolve large amounts of fluids during their ascent through and emplacement into the crust. A global review of available fluid inclusion…

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A Heat Demand Map of North-West Europe – its impact on supply areas and identification of potential production areas for deep geothermal energy
2021
Eileen Herbst1,2, Elias Khashfe1,2, Alexander Jüstel1,2, Frank Strozyk2, Peter Kukla1,2

To achieve the Paris Agreement’s goal of maximum global warming by 2 degrees, CO2 reduction is indispensable. Space heating for residential, service and industrial buildings amounts to 26% of EU’s…

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A key option to transfer geosciences – relate geoheritage to fun
2021
Marie-Luise Frey1, Christine Hogefeld2, Pascal Schmitz3, Klaudia Wolf4

Many attempts up to today exist to transfer geosciences to the general public. Some started at the beginning of the 20th century. It is surprising that only since the beginning…

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A Late Glacial surface rupturing earthquake at the Peel Boundary faultzone, Roer Valley Rift System, and its morhologic response by the Meuse river
2020
Ronald Van Balen (1,2), Marcel Bakker (2), Kees Kasse (1), Jakob Wallinga (3) & Hessel Woolderink (1)

In a trench along the central part of the Peel Boundary fault zone (PBFZ), Roer Valley Rift System (RVRS), southeastern Netherlands, evidence was found for a large faulting event that…

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A multiscale numerical modelling investigation of quartz CPO variation due to flow partitioning
2020
Ankit Bhandari & Dazhi Jiang

Quartz crystallographic preferred orientations (CPOs) in natural mylonites can vary to such an extent that they apparently give opposite senses of shear within a single thin section. Many qualitative explanations…

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A new approach for 3d temperatur modelling in areas with sparse data – an example from northern Saxony-Anhalt (Germany)
2020
Jacob Wächter, Christian Olaf Müller, Alexander Malz & Klaus-Jörg Hartmann

Modelling of subsurface temperatures is based on various approaches, which typically focus on interpolation or numerical simulation procedures. Mostly, they are based on few single measurements and do not take…

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A new universal model explaining fracture-trace length distributions
2021
Michael Krumbholz1, Christoph Hieronymus2, Jochen Kamm3

Fracture dimensions largely control rock properties like strength and permeability. Thus, knowing their statistical distributions is of great importance in many applied fields of the geosciences e.g., in geothermics, mineral…

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A novel Augmented Reality Sandbox for Outreach and Education in Geoscience
2020
Daniel Escallón Botero (1), Simon Virgo (1,2) & Florian Wellmann (1,2)

Seeing Geology is hard! To build an intuitive understanding of complex 3 dimensional structures in the subsurface requires a lot of training. To make this experience more accessible, we present…

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A numerical sensitivity study of how permeability, porosity, geological structure, and background hydraulic gradient control the lifetime of a geothermal reservoir
2020
Johanna Frederike Bauer (1), Michael Krumbholz (2), Elco Luijendijk (3)

The utilization of geothermal energy comes with a high economic risk. Many of the parameters that control the quality of a geothermal reservoir are heterogeneously distributed and therefore difficult to…

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A profile through ancient fast-spreading oceanic crust in the Wadi Gideah, Oman ophiolite – reference frame for the crustal drillings within the ICDP Oman Drilling Project
2021
Jürgen Koepke1, Dieter Garbe-Schönberg2, Dominik Mock1, Samuel Müller2

The Oman Ophiolite is the largest and best-investigated piece of ancient oceanic lithosphere on our planet. This ophiolite was target of the Oman Drilling Project (OmanDP) within the frame of…

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A risk-based containment monitoring framework for long term geological CO2 storage
2020
Marcella Dean, Sara Minisini & Steve Oates

Carbon capture and storage (CCS) is a key climate mitigation technology available to meet the Paris Agreement goal for limiting global warning. The goal of CCS projects is to separate,…

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A scientific journey through geo-ecological extremes – landscape dynamics at the lower Danube between the Black Sea and the Carpathian Volcanoes
2020
Markus Finke (1), Ulrich Hambach (2) & Mihai Orleanu (3)

The CTC-Trail (“Coast-to-Carpathians”) is a conceptual educational geo-trail that is being created to guide visitors through a transect from the southern parts of the western Black Sea area grasslands through…

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A systematic approach to develop recommendations for surface exploration of siting regions for a radioactive waste repository in Germany
2021
Lisa Richter, Thies Beilecke, Raphael Dlugosch, Tilo Kneuker, Lukas Pollok, Nicole Schubarth-Engelschall, Ralf Semroch

The site selection procedure for a high-level radioactive waste repository in Germany is based on the Repository Site Selection Act (StandAG, 2017) and comprises three phases. Commissioned by the Bundesgesellschaft…

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A virtual field tour of the Jurassic Coast, NE England
2020
David Hodgetts

The geological exposures of the Jurassic Coast of North East England cover a variety of depositional systems, from both continental and marine settings, and provide an excellent opportunity for field…

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A virtual field tour of the Wren’s Nest National Nature Reserve, part of the Black Country Unesco Geopark, UK
2021
David Hodgetts

The Wren’s Nest National Nature Reserve, situated in the West Midlands, UK, is well known for its exposures of Silurian (Wenlock and Ludlow Series) carbonates. The Wren’s Nest was first…

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Active engagement of students by means of class exercises
2020
Hans de Bresser,

Utrecht University, The Netherlands In order to improve student learning during lectures on location, students can be actively engaged by giving short class-exercises. Class exercises are just one of the…

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Aeolianites of the Detfurth Formation (Middle Buntsandstein, Lower Triassic) in the Hessian Depression: spatial distribution and stratigraphic affiliation with regard to modern stratigraphic concepts and use in applied geosciences
2021
Nicola Hug-Diegel

This talk focusses on the Detfurth Formation of the Hessian Depression and aims to point out a modern way of subdividing the sedimentary record, serving as a profound basis in…

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Age-depth model derived from borehole logging and seismic data – sedimentological evolution of Lake Ohrid (North Macedonia/Albania) for the last 1 million years
2020
Arne Ulfers (1), Christian Zeeden (1), Bernd Wagner (2), Sebastian Krastel (3) & Thomas Wonik (1)

To understand the evolution of lake basins, a robust age-depth model is essential. Usually, such model is created based on core material using various dating techniques (e.g. radiometric dating, magnetostratigraphy,…

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Alpine lithospheric strength and its relation to seismicity distribution
2020
Cameron Spooner(1,2), Magdalena Scheck-Wenderoth (1,3) & Mauro Cacace (1)

Despite the amount of research focused on the Alpine orogen, different hypotheses still exist regarding varying seismicity distribution patterns throughout the numerous crustal blocks of different physical properties that comprise…

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Alterations at the post-Variscan nonconformity: implications of Permo-Carboniferous surface weathering and burial diagenesis (Sprendlinger Horst, Germany)
2020
Fei Liang (1), Jun Niu (2), Adrian Linsel (1), Matthias Hinderer (1), Dirk Scheuvens (1) & Rainer Petschick (3)

The post-Variscan nonconformity formed due to the denudation of the Variscan orogen which had taken place between Devonian and early Permian. The widespread post-Variscan nonconformity in central Europe represents an…

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Amelogenesis and tribosphenic molars: patterns and variation.
Ivan Horacek (1), Pavla Hanouskova (1) & Anna Kallistova (2)

The tribosphenic molar presents phylotypic stage of the mammalian dental evolution. A study of its enamel microarchitecture in several clades (Chiroptera, Afrosoricida, Eulipotyphla, Didelphomorhia, Cetartiodactyla) revealed, apart of considerable taxon-specific…

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An anatectic model for albite-spodumene pegmatites from the Austroalpine Unit (Eastern Alps)
2020
Tanja Knoll (1), Benjamin Huet (1), Ralf Schuster (1) & Heinrich Mali (2)

Albite-spodumene pegmatite are considered to be the product of extreme fractionation of melts or fluids deriving from large alkaline granite intrusions. Anatectic melts deriving from partially molten metasediments are in…

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An archive of many hats: speleothems for coupled climate and ecosystem reconstructions
2021
Franziska Anna Lechleitner

Speleothems are secondary cave carbonate deposits and an established terrestrial paleoclimate archive. Moreover, they have the potential to record conditions in the ecosystem overlying the cave, particularly the vegetation and…

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An assessment of geothermal energy potential for power generation in Iran
2021
Mirmahdi Seyedrahimi-Niaraq1, Reza Taherdangkoo2, Faramarz Doulati Ardejani3

Energy generated from geothermal systems is a good alternative to non-renewable fossil fuels and plays an important role in reducing greenhouse gas emissions. Geothermal energy is generated from the inner…

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An introduction to Landslide Susceptibility Assessment Tools – Project Manager Suite
2021
Nick Schüßler, Jewgenij Torizin, Michael Fuchs

Landslide Susceptibility Assessment Tools – Project Manager Suite (LSAT PMS), an open-source, user-friendly program written in Python developed and released at the Federal Institute for Geosciences and Natural Resources (BGR)….

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Analyses of geophysical borehole data of Prees-2 (England) as part of the ICDP JET project
2021
Katharina Leu, Thomas Wonik, Christian Zeeden

In the end of 2020, an approx. 650 m deep core was drilled at Prees in Shropshire, England, as part of the ICDP project JET (Integrated Understanding of the Early…

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Analysis of continent-scale geological maps
2021
Anke M. Friedrich

Geological maps are important products of geological work that display results of generations of field geologists’ work. Most original geological maps are generated and utilized at local scales. At regional…

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Analysis of surface displacements caused by mine flooding for the project FloodRisk with SAR Interferometry, GNSS and Levelling
2021
Markus Even1, Malte Westerhaus1, Daniel Schröder2

After operation of hard coal mines has been terminated in Germany, many of the mines are being flooded. In the project “FloodRisk: Earthquakes, uplift, and long-term liabilities – risk minimization…

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Antarctic sea ice reconstructions: pros and cons of highly branched isoprenoids as sea ice proxies
2021
Nele Lamping1, Wee Wei Khoo1, Juliane Müller1,2, Oliver Esper1, Thomas Frederichs2, Christian Haas1

The reconstruction of past Antarctic sea ice coverage through the application of diatom assemblages is often hampered in near coastal environments due to silica dissolution effects. The more recently established…

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Application of digital media and interactive technologies in popular palaeontology education
2020
Tong Bao (1,2), Hongyi Liu (2), Takashi Ito (2) & Katarzyna S. Walczyńska (2,3)

As an important component of natural science education, popular palaeontology education developed rapidly worldwide. Traditional offline public lectures, guide tours and peripheral products represent the main implementations. With the appearance…

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Application of in-situ U-Pb-He double-dating on detrital zircons – an example of Alpine sediments from the Inn river and its tributaries
2021
Falko Malis, István Dunkl, Hilmar von Eynatten

In-situ U-Pb-He double-dating of detrital zircon provides information regarding formation and cooling ages of source rocks. Its advantage over conventional dating methods is the unique ability to obtain a high…

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Applications of virtual reality to Geoscience
2020
Claudia Ruiz-Graham

Field trips are essential for geologists and engineers to develop interpretation skills and to get a sense of scale. Unfortunately, attendance to field trips has become less frequent due to…

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Applying astrochronology to reconstruct sedimentation rate and time from downhole logging data at Lake Chalco, Central México
2020
Mehrdad Sardar Abadi, Christian Zeeden, Arne Ulfers, Katja Hesse & Thomas Wonik

Understanding the evolution of lower latitude climate from the most recent glacial period of the latest Pleistocene to post glacial warmth in the continental tropical regions has been obstructed by…

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Approach for the development of a radon potential map for the Darmstadt area
2021
Anastasia Vogelbacher1, Rouwen Lehné1,2, Eric Petermann3

Radon (Rn)is a naturally occurring, radioactive gas that is considered an indoor air pollutant. Due to its negative effects on human health, a Germany-wide „Radon Potential Action Plan“ was implemented…

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Are we sharing our data and software yet? Community, tools, incentives – and flexibility
2021
Shelley Stall

The culture around sharing our data and software is evolving. Funders are starting to provide more clarity and requirements. Institutions are working to provide support and incentives. And journals are…

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ARTIFICIAL INTELLIGENCE AS TOOL TO PREDICT GEOHAZARDS: READINESS TO ACCEPT AND IMPLEMENT
2020
Shrawani Shagun Jha

Geological hazards or Geohazards, natural or human-induced disruptions of the earth surface that may trigger landslides, sinkholes, or earthquakes, present serious threats to communities, cost extensive damage to infrastructure and…

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Artificial neural networks acting as geothermometer for reservoir temperature estimation
2021
Mark Vollmer, Lars Helge Yström, Fabian Nitschke, Thomas Kohl

The application of geothermometry has been used for the last six decades for geothermal reservoir temperature estimation. A steady evolution of conventional geothermometers to multicomponent tools as well as application…

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Asphalt formation at the seafloor of the Campeche-Sigsbee salt province, southern Gulf of Mexico
2021
Gerhard Bohrmann1, Miriam Römer1, Chieh-Wei Hsu2, Thomas Pape1, Yann Marcon1, Ian MacDonald3, Paul Wintersteller1

Hydrocarbon seepage is widespread distributed at the southern Gulf of Mexico. During several research cruises in 2003, 2006, and 2015 (SO174, M67/, and M114) we used multidisciplinary approaches, including multi-beam…

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Assessing sediment accumulation at inundated anthropogenic marshland in the southern North Sea: Using turbidity measurements and particle tracking
2020
Ingo Jürgen Hache (1), Sebastian Niehüser (2), Volker Karius (1), Arne Arns (3) & Hilmar von Eynatten (1)

New approaches to coastal protection measures become increasingly important to protect for or to mitigate sea level rise (SLR) worldwide. Measures that involve only the heightening of dykes or revetments…

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Assessing the potential impact of fractures on heat extraction from tight Triassic reservoirs in the West Netherlands Basin
2020
Quinten Diede Boersma (1), Pierre Olivier Bruna (1), Stephan de Hoop (1), Francesco Vinci(2), Ali Moradi Tehrani (3) & Giovanni Bertotti (3)

Heat production from low permeability reservoirs is believed to be significantly aided by the presence of open natural fractures (e.g. Upper Rhine Graben). However, in hot sedimentary aquifer studies these…

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Assessment of High Temperature Aquifer Storage Potential in Depleted Oil-Reservoirs from the South German Molasse Basin
2021
Ulrich Steiner, Florian Bauer, Katharina Schätzler, Kai Robin Stricker, Eva Schill

In the discussion about the future role of geothermal in the energy transition policy, the topic of underground heat storage became recently more and more prominent. High Temperature Aquifer Storage…

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Astronomical climate forcing of ~2.5 Ga banded iron formations
2020
Margriet L. Lantink (1), Joshua H. F. L. Davies (2,3), Rick Hennekam (4), Frederik J. Hilgen (1), David McB. Martin (5), Paul R. D. Mason (1), Gert-Jan Reichart (1,4) & Urs Schaltegger (2)

Large-scale banded iron formations (BIFs) were deposited during Neoarchean to early Paleoproterozoic and have been mainly linked to hydrothermal plume activity and the rise of oxygen in the ocean and…

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Astronomically forced sphalerite growth circulation in the Upper Mississippi Valley District, USA
2020
Mingsong Li & Hubert Barnes

Groundwater plays an essential role in global water cycles via feedback between groundwater and climate systems. However, the geologic history of groundwater activity remains unclear due to limited data. Sphalerite…

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Authority, Identity and Ethics of Data Re-publication and Duplication
2021
Lesley Wyborn1, Kirsten Elger2, Jens Klump3, Kerstin Lehnert4, Mingfang Wu5

Today, research data is widely available in digital form, datasets are easily accessible online and the dataset creator should consider it advantageous as this leads to greater uptake. However, the…

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Automated heavy mineral analysis of silt-sized sediment by artificial-intelligence guided Raman Spectroscopy
2021
Nils Keno Lünsdorf1, Jan Ontje Lünsdorf3, Gábor Újvári2, Hilmar von Eynatten1

Compositional data on heavy minerals is fundamental in sedimentary provenance analysis. Typically, this data is gathered by optical microscopy and more recently, by mineral chemical analysis (MLA, QEMSCAN) or Raman…

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Balancing the oceans alkalinity budget by physical weathering of carbonate rocks
2020
Gerrit Müller, Jack Middelburg & Appy Sluijs

Alkalinity, the excess of bases over acids, is a frequently used conservative variable in Biogeochemistry and Oceanography to calculate carbonate system parameters and estimate the oceans susceptibility to acidification. On…

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Barite precipitation was associated with low temperature hydrothermal venting in the 3.2 Ga Mapepe Formation, Barberton Greenstone Belt
2020
Paul Mason (1), Desiree Roerdink (2) & Dylan Wylmeth (3)

Sulfate minerals are rare in the geological record prior to 2.2 Ga. This is consistent with prevalent anoxic conditions in the Earth’s surface environment prior to the great oxidation event,…

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Basaltic Dykes and xenoliths from the Kiama-Gerroa Region, New South Wales, Australia
2020
Samar Usamah Abu Shamma (1), Ian Graham (1), Paul Lennox (1) & Glen Bann (2)

Multiple dykes situated along the southeastern Australian coastline from south of Kiama to Gerroa were examined in detail. The results of geochemical analysis indicate the dyke’s composition varies from sub-alkaline…

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Basic implementation for a 3D-viewer with web technology
2021
Michael Wolf, Rüdiger Reimann, Silvia Dieler, Jennifer Ziesch

The presentation of 3D-data is gaining a crucial role for the government agencies in Germany. With the introduction of new federal laws on data storage and release, it became important…

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Battery metal exploration targets in the Erzgebirge from stream sediment geochemistry and mineral predictive mapping with self-organizing maps
2021
Andreas Brosig, Andreas Barth, Peggy Hielscher, Claus Legler, Stefan Schaefer, Peter Bock, Andreas Knobloch

A 50-element stream sediment geochemistry survey with a sample density of one sample per km² shows anomalies for a number of high technology metals, including Sn, W and the battery…

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Behaviour of metals in the geothermal fluid system of the Upper Rhine Graben: Lithium
2021
Michèle Jungmann, Benjamin Walter, Elisabeth Eiche, Tobias Kluge, Dominik Gudelius, Jochen Kolb

In order to increase the economic potential of geothermal power plants in view of environmental protection and sustainability, there are considerations to extract critical raw materials (CRM), such as lithium,…

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Bias evaluated structural and probabilistic subsurface modelling: a case study of the Münsterland Basin, NW Germany
2021
Marius Pischke1,2, Alexander Magnus Jüstel1,2, Frank Strozyk1, Peter Kukla1,3, Florian Wellmann2

The analysis of uncertainties in the description of the subsurface is an important aspect for resource exploration and material storage. Because of the complexity of the subsurface and an often…

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Biogeographic patterns of benthic foraminifera in contourite drift systems of the Atlantic Ocean
2021
Anna Saupe1, Johanna Schmidt1, Jassin Petersen1, André Bahr2, Patrick Grunert1

Benthic foraminifera inhabit diverse marine environments, including areas of persistent bottom currents and contourite drift deposition. Certain highly adapted epibenthic foraminifera colonize contourite deposits as opportunistic suspension feeders. A correlation…

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Biologic agents mediating matter-flow inside the porous igneous oceanic crust, Vesteris Seamount, Greenland Sea
2021
Hinrich Schmid-Beurmann1, Magnus Ivarsson2, Wolfgang Bach3, Wolf-Achim Kahl4, Jörn Peckmann1

Microorganisms within the lithosphere are biologic agents settling in niches inside the terrestrial and oceanic crust, populating the extreme environments of the deep biosphere. The fossil record of the permeable…

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Biological productivity in the Southern Ocean across the Eocene-Oligocene transition
2021
Gabrielle Rodrigues de Faria1,2, Volkan Özen1,2, David Lazarus1, Ulrich Struck1,2, Johan Renaudie1, Gayane Asatryan1

The Eocene-Oligocene transition (EOT, ~34Ma) marks a dramatic climate change and carbon cycle perturbation in the Cenozoic. Understanding the variations in export productivity associated with EOT provides important information about…

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Biomineralization processes in low-temperature, shallow-water hydrothermal vent at Tagoro submarine volcano, El Hierro Island (Central East Atlantic)
2021
Blanca Rincón-Tomás1, Francisco Javier González2, Luis Somoza2, James R. Hein3, Teresa Medialdea2, Esther Santofimia2, Egidio Marino2, Pedro Madureira4

A novel hydrothermal system was discovered at the summit of the underwater Tagoro volcano at 89–120 m depth after the 2011–2012 eruption, characterized by the low-temperature venting of Fe-rich fluids…

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Burggraf-Bernsdorf – transformation of a potassium mine to a UGS facility
2021
Hagen Feldrappe

The potassium mine Burggraf-Bernsdorf was established between 1911 and 1913. It was situated at the southwestern flank of the Roßleben saddle (Sachsen-Anhalt) and belonged to the “Unstrut Kalirevier”. About 300.000…

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Carbonate microfacies and transgressive-regressive cycles of Oxfordian shallow-water limestones (Korallenoolith, Lower Saxony Basin)
2021
Deyan Zhang, Stefan Huck, Ulrich Heimhofer

During the Oxfordian stage, the Lower Saxony Basin (LSB) was covered by a shallow epicontinental sea (Ziegler 1990), in which a thick succession of marine limestones and marls was deposited….

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Carbonatites do not exist in vacuum: carbonatite–rock interactions from experiment and nature, and implications for REE mineralisation
2021
Michael Anenburg

The igneous nature of carbonatites has been controversial for decades until experimental work in the 1960s and 1970s conclusively showed that carbonatite melts can exist in geologically reasonable conditions. The…

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Cave monitoring of La Vallina Cave (NISA): Imprint of seasonality on δ13CDIC, δ18O and trace elements and the implications for speleothems
2021
Oliver Kost1, Saul Gonzalez Lemos2, Laura Endres1, Heather Stoll1

A cave monitoring sets the basis of speleothem studies. It helps to understand changing cave conditions on seasonal scale and site-specific geochemical differences such as hydrological conditions and heterogeneities in…

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CDGP- a gateway to geothermal data in Alsace
2021
Marc Schaming1, Mathieu Turlure2, Marc Grunberg2, Jean Schmittbuhl1

The CDGP [https://cdgp.u-strasbg.fr], Data Center for Deep Geothermal Energy, was created in 2016 by the LabEx G-Eau-Thermie Profonde (continuing now in ITI GeoT) [https://geot.unistra.fr/], to archive the high-quality data collected…

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Cementation rates of detrital platform carbonates and sequence stratigraphic implications
2021
Thomas Mann1, Hildegard Westphal2

Different views exist on the prevalent processes that control transport and deposition of detrital platform carbonates in a sequence stratigraphic framework. While some models indicate that meteoric cementation during sea-level…

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Cenozoic evolution of the Icelandic Plume and its influence upon the topographic evolution of Northwest Europe
2021
Nicky White

The Icelandic mantle plume is probably the largest convective upwelling on Earth. It is generally agreed that its growth and evolution have had a significant influence on the geologic and…

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Cenozoic Mass Transport Deposits in the Northern Dutch Offshore: Anatomy and Implications revealed by HiRes Seismic Mapping
2020
Alex Marks (1) & Guido Hoetz (2)

Recent high resolution 3D seismic reflection data allowed to map Late Cenozoic Mass Transport Deposits (MTD) in great detail. These deformation structures in Miocene/Pliocene sediments are linked to the Eridanos…

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Challenges and approach to a geological 3-D modeling workflow to identify potential areas for a repository for high-level radioactive waste
2021
Julia Rienäcker-Burschil, Christian Buxbaum-Conradi, Standortauswahl Team

In 2020, the Bundesgesellschaft für Endlagerung mbH (BGE) published the Sub-areas Interim Report, identifying areas with favorable geological conditions for a deep repository site for storage of high-level radioactive waste…

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Changing carbonate budgets and the maintenance of coral reefs and reef islands
2021
Chris T Perry

The ecology and structure of many tropical coral reefs have altered markedly over the past few decades. Drivers of this degradation range from direct local damage from destructive human practices…

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Characterization of pore space in sandstone using the anisotropy of magnetic susceptibility
2021
Julius Schenk1, Agnes Kontny1, Benjamin Busch1, Ilner Khasanov2, Hagen Steger1

The pore space in siliciclastic rocks is one of the most important petrophysical properties in reservoir rock characterization. Of particular interest is the 3D distribution of pore space and permeability…

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Characterizing sediment dewatering and fluid flow in accretionary systems – A rock magnetic approach on the example of IODP Site U1518
2020
Annika Greve (1), Myriam Kars (2), Mark J. Deckers (1) & Michael Stipp (3)

The dewatering and subsequent drainage of fluids from porous sediments in forearc regions control the frictional behavior of the plate boundary décollement and all other faults in the forearc. Site…

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China’s future as a low carbon economy: The Chinese hard coal industry & renewable energies in perspective
2021
Julia Tiganj

With the recently announced climate neutrality for the year 2060, there are plenty of questions in China about the future and the existence of the hard coal mining industry. With…

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Cliff coast collapses driven by nested biological, astronomical and meteorological activity cycles
2021
Michael Dietze, Kristen L. Cook, Luc Illien, Oliver Rach, Niels Hovius

Cliffs line many erosional coastlines. Localized failures can cause land loss and hazard, and impact ecosystems and sediment routing. Links between cliff erosion and forcing mechanisms are poorly constrained, due…

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Climate, volcanoes, and tectonic activity – Their influence on the lower to middle Eocene paleoenvironment on the Sprendlinger Horst (Southwest Germany)
2021
Maryam Moshayedi1, Olaf K. Lenz1,2, Jürgen Mutzl1, Volker Wilde2, Matthias Hinderer1

The Sprendlinger Horst represents the northern extension of the Odenwald basement which is flanking the Upper Rhine Graben to the northeast. Several small, isolated basins filled by lacustrine sediments of…

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Closely-spaced carbonate replacement veins: the influence of external stress on focused fluid flow during carbonation of peridotite
2021
Manuel D. Menzel1, Janos L. Urai1, Estibalitz Ukar2

The reaction of serpentinized peridotites with CO2-bearing fluids to listvenite (quartz-carbonate rocks) requires massive fluid flux and maintained permeability despite volume increase. Here we investigate listvenites and serpentinites samples from…

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Co-variation of silicate, carbonate, and sulfide weathering drives CO2 release with erosion: Constraints from southern Taiwan
2021
Aaron Bufe1, Niels Hovius1, Robert Emberson2, Jeremy Rugenstein3, Albert Galy4, Hima Hassenruck-Gudipati5, Jui-Ming Chang6

The supply of fresh minerals to Earth’s surface by erosion is thought to modulate global climate by removing atmospheric carbon dioxide (CO2) through silicate weathering. In turn, weathering of accessory…

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Collecting, sharing, and visualising harmonised data on European raw materials occurrences and mines – success or failure?
2021
Špela Kumelj1, Lisbeth Flindt Jørgensen2, Frands Schjøth2, Andrej Vihtelič1, Blaž Bahar1, Katarina Hribernik1

Easy web access to useful and reliable mineral information for the whole of Europe is the main objective of the extension of the M4EU base in the GeoERA project Mineral…

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Combined architectural-element and microfacies analyses in carbonate sedimentology: the intra-basin shoal complex of the Lower Muschelkalk (Rüdersdorf Formation, Anisian)
2021
Fabian Käsbohrer, Matthias Franz

The layer-cake strata of the epeiric Anisian-Ladinian Muschelkalk are devoid of large-scale architectural elements, e. g. steep clinoforms of a progradional platform slope. This resulted in a simplified approach in…

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Combined architectural-element and microfacies analyses in carbonate sedimentology: the intra-basin shoal complex of the Lower Muschelkalk (Rüdersdorf Formation, Anisian)
2021
Fabian Käsbohrer, Matthias Franz

The layer-cake strata of the epeiric Anisian-Ladinian Muschelkalk are devoid of large-scale architectural elements, e. g. steep clinoforms of a progradional platform slope. This resulted in a simplified approach in…

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Combined Fluorescence Imaging and LA-ICP-MS Trace Element Mapping ofStalagmites: Microfabric identification and interpretation
2021
Jakub Sliwinski1, Heather Stoll2

Here, we map a series of stalagmites from Asturias, Spain, by laser ablation inductively-coupled-plasma mass spectrometry and confocal laser scanning (fluorescence) microscopy and discuss the origins of trace element and…

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Comparison of high-resolution SIMS profiles with maximum resolution IRMS stable isotope data
2021
Tobias Kluge1,2, Philipp Holz1, Elisabeth Eiche1, Thomas Neumann3, Alexander Land4,5, Maximilian Schuh2,6, Mario Trieloff2,7, Axel K. Schmitt2,7

High-resolution speleothem paleoclimate records with annual to seasonal resolution are helpful for detailed analysis of climatic changes with limited duration (e.g., volcanic climate impacts), but also for longer-duration events (e.g.,…

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Comparison of radon and thoron exhalation and emanation in granites from Central Portugal
2021
Filipa P. Domingos1,2, Sérgio L. R. Sêco1, Alcides J. S. C. Pereira1,3

Thoron contribution to the inhaled dose is often neglected due to its shorter half-life and lack of strong gamma emissions that hinder its measurement. However, numerous studies report a significant…

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Complex ascent of mantle plumes in a phase-changing world
2021
Anders Lillevang Vesterholt, Thorsten J. Nagel

Phase changes in the mantle have long been known to play a major role for convection in a one-component mantle. When considering cases with depleted ambient upper mantle and upwelling…

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Compositions of hydrothermal vent fluids as a guide to subseafloor mineralization processes
2021
Wolfgang Bach, Alexander Diehl

Studying active hydrothermal systems in the deep-sea provides unique opportunities for furthering our understanding of how polymetallic seafloor massive sulfide accumulations form. The possibility of sampling the ore-forming fluids that…

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Coniacian-Santonian ammonites from the Ilam Formation in the Zagros basin, west of Iran
2020
Mostafa Aseh

The ammonites from upper Coniacian to middle to upper Santonian of the Siah-Kuh section in Zagros basin, west of Iran have been described and illustrated. Three ammonite species from the…

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Contrasting rare metal potentials in two Southern Alpine vein deposits
2021
Thomas Angerer1, Tim Poniewas1, Lorenz Profanter1, Martina Tribus1, Helene Braetz2

Investigating rare metal potentials of the Alpine regions is of great importance to progress towards future supply independence. Sphalerite is an important carrier of Co, In, Ga, Ge, and Sb,…

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Creating sustainable approaches in a holistic way or Other ways to sustainability
2021
Julia Bauer

Every country has a different approach to of climate change adaptation based on local context and needs. This presentation gives an overview how the Netherlands and Germany approach sustainability, and…

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Critical metals in the environment
2021
Jörg Schäfer

The overall amount of metals and their variety used for technical applications has been subject to a steep increase during the past decades and is forecast to further develop. Growing…

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Critical Minerals in US Geothermal Brines: Opportunities and Challenges for their Extraction
2021
Ghanashyam Neupane

Geothermal power plants produce a large volume of brine for power generation. Since these brines are the product of long-term water-rock interactions at elevated temperatures at depth, they contain dissolved…

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Critical Raw Materials (CRM) potential of Slovenian historical mining sites
2020
Klemen Teran

Of the more than 200 metal ore occurrences and deposits discovered on Slovenian territory, several have been developed into significant mines (e.g. the Idrija Hg mine or the Mežica Pb-Zn-Mo…

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Critical Raw Materials for the Energy Transition
2021
Kathryn Goodenough

The global objective of achieving net zero emissions is driving significant decarbonisation of energy and transport, with a shift towards renewable energy sources and electric vehicles. It is now widely…

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Crust and upper mantle structure of the Ligurian Sea revealed by ambient noise tomography and receiver function analysis
2020
Felix Noah Wolf (1), Dietrich Lange (1), Heidrun Kopp (1,2), Anke Dannowski (1), Ingo Grevemeyer (1), Wayne Crawford (3), Martin Thorwart (2), Anne Paul (4), the AlpArray Working Group (5),

The Liguro-Provencal-basin was formed as a back-arc basin of the retreating Calabrian-Apennines subduction zone during the Oligocene and Miocene. The resulting rotation of the Corsica-Sardinia block is associated with rifting,…

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Crystallisation sequence of a REE-rich carbonate melt: an experimental approach
2021
Valentin Mollé1, Fabrice Gaillard1, Zineb Nabyl1, Johann Tuduri2, Ida Di Carlo1, Saskia Erdmann1

Carbonatites host the main REE deposits in the world, with bastnaesite being the main REE-bearing mineral of interest. However, the nature of the enrichment process, magmatic vs hydrothermal, is still…

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Curating data and samples in the long-tail – tools and examples from GFZ Data Services
2021
Kirsten Elger, Florian Ott

GFZ Data Services, an international research data repository for the Earth sciences domain and Allocating Agent for the IGSN Global Sample Number (IGSN), is operated under the umbrella of the…

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Current use of geological resources under the view of sustainability – examples from the UNESCO Global Geopark Harz . Braunschweiger Land . Ostfalen
2021
Henning Zellmer1, Volker Wilde2

When it comes to the mining and use of local geological raw materials, a reflexive, sometimes undifferentiated social rejection arises. The ore, hydrocarbon and coal consumption have now been reduced…

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Cyclic loading of magnetite bearing rocks: modifications of structure, magnetic and elastic properties
2021
Helena Fuchs, Boris Reznik, Agnes Kontny, Frank Schilling

Repeated seismic activity can cause progressive failure of rock masses due to material fatigue [1]. To simulate induced seismic loading, an iron ore with alternating quartz- and magnetite-rich layers from…

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Das natürlich geschlossene System (NGS) – Inzidenz der reflexiven und transitiven Eigenschaften in der Geologie
2021
Hans Eckhard Offhaus

Das natürlich geschlossene System (NGS), das von (Stensen Niels 1669) begründet wurde, ist ein Modell des Komplexes von exakt gemessenen Parametern dualer Gesteinssysteme der Geologie. Die angewandte Messtechnik in den…

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Data Journals – Bridging the worlds of data and research
2021
David Carlson1, Kirsten Elger2, Jens Klump3, Ge Peng4, Johannes Wagner5

In less than one decade the open-access data journal Earth System Science Data (ESSD, a member of the Copernicus Open Access Publisher family) grew from a start-up venture into one…

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Decadal sea surface temperature variability in the Eastern Mediterranean during the Last Interglacial
2020
Igor Obreht (1), David De Vleeschouwer (1), Lars Wörmer (1), Michal Kucera (1), Devika Varma (1), Thomas Laepple (1,2), Jenny Wendt (1), Matthias Prange (1), Sri D. Nandini-Weiss (1), Hartmut Schulz (3) & Kai-Uwe Hinrichs (1)

Precise future predictions of Mediterranean sea surface temperature (SST) variability as one of the most sensitive regions to climate change are hampered by insufficient knowledge of accurate SST reconstructions in…

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Decoupled dust deposition and ocean productivity in the Antarctic Zone of the Southern Ocean over the past 1.5 million years
2021
Michael E. Weber1, Ian Bailey2, Sidney R. Hemming3, Yasmina M. Martos4,5, Brendan T. Reilly6, Thomas A. Ronge7, Stefanie Brachfeld8, Trevor Williams9, Maureen Raymo3, Simon T. Belt10, Lukas Smik10, Hendrik Vogel11, Victoria Peck12, Linda Armbrecht13, Alix Cage14, Fabricio G. Cardillo15, Zhiheng Du16, Gerson Fauth17, Christopher J. Fogwill14,18, Marga Garcia19,20, Marlo Garnsworthy21, Anna Glüder22, Michelle Guitard23, Marcus Gutjahr24, Iván Hernández-Almeida25, Frida S. Hoem26, Ji-Hwan Hwang27, Mutsumiq Iizuka28, Yuji Kato29, Bridget Kenlee30, Suzanne OConnell31, Lara F. Pérez12, Osamu Seki32, Lee Stevens33, Lisa Tauxe6, Shubham Tripathi34, Jonathan Warnock35, Xufeng Zheng36

Southern Ocean paleoceanography provides key insights into how iron fertilization and oceanic productivity developed through Pleistocene ice-ages and their role in influencing the carbon cycle. We report the first high-resolution…

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Deep geothermal potentials of Hesse as derived from geological 3D models and thermo-hydraulic simulations
2020
Nora Koltzer (1), Judith Bott (1), Kristian Bär (2), Maximilian Frick (1), Mauro Cacace (1) & Magdalena Scheck-Wenderoth (1)

Geothermal power plants require reservoirs of high temperature, high flow rates and sustainable recharge. Typically, there is a trade-off between increasing temperatures and decreasing fluid availability (due to pore space…

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Deep hydrochemical profile through the Alps – solute acquisition during distinct water-rock-interaction along the Sedrun section of the Gotthard Base Tunnel
2021
Ingrid Stober, Kurt Bucher

During drilling of the Gotthard Base Tunnel through the Central Alps the exposed fractured rocks and the frequent water inflows provided a deep insight into regional hydrogeological processes in orogenic…

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Deepwater Systems Reloaded: Advances on our understanding on submarine lobe deposits
2021
Yvonne T. Spychala1, David M. Hodgson2, Joris T. Eggenhuisen3, Stephen Flint4, Christopher Stevenson5, Mike Tilston6, Ian A. Kane4, Amadine Prelat7, Florian Pohl8

Submarine lobes are high aspect ratio sand-rich deposits that are fed by turbidity currents and debris flows via channels in deep-marine settings. As a major component of submarine fans, they…

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Deformation mechanisms in shallow-crustal active fault zones: Implications from the Main Frontal Thrust of Himalayas
2020
Dyuti Prakash Sarkar (1), Jun-ichi Ando (1), Kaushik Das (1), Gautam Ghosh (2) & Prabir Dasgupta (3)

The nature of the shallow-crustal active faults has been widely studied to elucidate their stress accommodation mechanisms and response to the fault movement in terms of stress localizations and ultimately…

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Depletion, Density, and Deposits through the mantle transition zone (MTZ)
2021
Thorsten Joachim Nagel1, Anders Vesterholt1, Christian Schiffer2

We present phase diagrams of variously enriched and depleted mantle rocks down to 800 kilometers depth and explore density as the parameter governing convection and compositional stratification. Some results are…

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Deposition of Subglacial Lake Sediments underneath the Laurentide Ice Sheet? – Sediment Cores from Lake Melville, Canada, provide first Evidence
2021
Sophie Kowalski1,2, Christian Ohlendorf1, Jens Matthiessen2, Andrea Catalina Gebhardt2

Lake Melville is a fjord-type lake located in Labrador, Eastern Canada, as part of the Hamilton Inlet System. It is significantly characterised by its eastern connection to the Labrador Sea…

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Design and application of messenger nanoparticle tracers for multi-parameter reservoir exploration
2021
Laura Spitzmüller1, Jonathan Berson2,3, Bastian Rudolph2,3, Fabian Nitschke1, Thomas Schimmel2,3, Thomas Kohl1

The inaccessibility of geothermal reservoirs makes the accurate determination and monitoring of reservoir properties and conditions difficult and is a major problem in reservoir engineering. We present an approach for…

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Determinants of ground source heat pump systems’ market acceptance: Empirical findings from Greece Spyridon Karytsas1,2
2021
Spyridon Karytsas1,2

The residential sector consumes a significant amount of energy globally, with the majority being produced through the use of fossil fuels. Residential microgeneration technologies, such as photovoltaic systems and micro…

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Development of a fluid treatment strategy to enable combined raw material and freshwater recovery from geothermal fluids
2021
Valentin Goldberg1, Daniel Winter2, Fabian Nitschke1, Diego Morata3, Joachim Koschikowski2, Thomas Kohl1

The energy transition and the associated need for non-energy, mineral raw materials have prompted the German government to expand research and development activities along the entire value chain. It is…

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Did volcanoes erupting in estuaries (Moodies Group, Barberton Greenstone Belt, BGB) serve as microbiological cradles during the Archean?
2020
Deon Janse van Rensburg (1), Sebastian Reimann (2), Christoph Heubeck (1), Andreas Zametzer (2) & Paul Fugmann (3)

The Moodies Group is classically described as a synorogenic sequence of quartz-rich sandstone, conglomerate, fine-grained sediments with subordinate ferruginous sediments and volcanic components. A prominent basaltic lava (MdL) approx. mid-section…

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Differences in decompression of the high-pressure Cycladic Blueschist Unit (Naxos Island, Greece): what can inclusions tell us?
2021
Alexandre Peillod1, Jarosław Majka2,3, Uwe Ring4, Kirsten Drüppel5, Clifford Patten1, Andreas Karlsson6, Adam Włodek3, Elof Tehler4

Determining the tectonic evolution and thermal structure of a tectonic unit that experiences a subduction-related pressure temperature (P-T) loop is challenging. Within a single unit, P-T conditions can vary from…

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Digital field methods in geoscience education and outreach
2021
Gösta Hoffmann, Valeska Decker, Sabine Kummer, Edouard Grigowski, Rosalie Kunkel

The scientific discipline „geology“ has relied on outcrops as the primary source of information since its beginnings. The initial equipment to analyse the rocks in these outcrops was simple: hammer,…

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Digital fieldtrip into the Vulkaneifel Unesco Global Geopark (Germany)
2020
Sabine Kummer(1), Andreas Schüller (3) & Gösta Hoffmann (1,2)

This virtual fieldtrip will lead the participants into the geopark „Vulkaneifel“. The aim of the fieldtrip is a) to introduce the geopark; b) to highlight the abilities of the smartphone…

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Dislocation creep flow laws of wet quartzite: the significance of pressure and slip systems
2020
Lucy Lu (1) & Dazhi Jiang

An accurate flow law for dislocation creep of quartzite is critical for the understanding of continental rheology and geodynamic models. Despite many years of effort, existing creep experiments have yielded…

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Does regional geology help to assess earthquake hazard in continental interiors?
2021
Tim Hahn1, Jonas Kley1, Diethelm Kaiser2, Thomas Spies2

Earthquake hazard assessment is crucial for different planning tasks, including the search for a German nuclear waste repository. Germany is located in an intraplate setting with a low level of…

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Drillcore GT1 of the ICDP Oman Drilling Project: insights into magmatic processes beneath fast-spreading mid-ocean ridges
2020
Dominik Mock (1,2), Benoit Ildefonse (2), Dieter Garbe-Schönberg (3), Samuel Müller (3), David Axford Neave (4), Jürgen Koepke (1), Oman Drilling Project Science Team (5)

The Samail ophiolite in Oman provides an ideal field laboratory for investigating the processes taking place beneath fast-spreading mid-ocean ridges (MORs). Drill site GT1, which was sampled by the Oman…

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Drilling overdeepened (Eastern) Alpine Valleys and Basins Markus Fiebig1, Flavio Anselmetti2, Marius Büchi2, Gerald Gabriel3
2021
Markus Fiebig1, Flavio Anselmetti2, Marius Büchi2, Gerald Gabriel3, Ernst Kroemer4, Frank Preusser5, Jürgen Reitner6, Sebastian Schaller2, Bennet Schuster2, David Tanner3, Ulrike Wielandt-Schuster7

The panalpine project „DOVE“ (Drilling Overdeepened Alpine Valleys), co-funded by the International Continental Scientific Drilling Program (ICDP), is drilling a series of overdeepened glacial troughs around the Alps that were…

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Drivers of Topography in Fold-thrust Belts: A Perspective from Central Nepal
2021
Paul R Eizenhöfer1, Nadine McQuarrie2, Suryodoy Ghoshal2

Topography in fold-thrust belts over geologic time reflects the development of an orogenic Coulomb wedge that represents a balance of tectonic and erosional forcings. The establishment of critically tapered topography…

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Dynamic as always – Sedimentary evolution of a coral reef island from the Spermonde Archipelago, Indonesia
2021
Yannis Kappelmann1,2, Hildegard Westphal1,2, Dominik Kneer1, André Wizemann1,3, Thomas Mann1,4

The effects of changing climate and environmental conditions on coral reef islands have received a lot of attention, and the findings are discussed broadly. The low elevation of such islands…

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Earth science education: How to narrow the gap between Earth science education potential and its low profile in schools?
2020
Nir Orion (1) & Clara Vasconcelos (2)

During the past 30 years, Earth science education (ESE) research has established a solid theoretical foundation, as well as practical strategies and techniques, for meaningful teaching of Earth science from…

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Easy-to-use diagnostics of mean-term drought vulnerability
2021
Gunnar Lischeid

Facing a couple of dry and warm years which are consistent with climate change scenarios, there is now increasing need for advanced diagnostic tools for drought risk assessment at the…

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Ecotoxicological effects of rare earth elements on early life stages of fish
2021
Stefania Piarulli1, Bjørn Henrik Hansen1, Frida Fossum2, Florence Kermen2, Bjarne Kvæstad3, Pål A. Olsvik4, Julia Farkas1

Rare earth elements, comprising the 15 lanthanoids (LN; IIIb in the Periodic Table) plus yttrium are critical elements for a wide range of applications, including new and traditional industries as…

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Ecotoxicological effects of rare earth elements on early life stages of fish
2021
Piarulli, Stefania (1), Hansen, Bjørn Henrik (2), Fossum, Frida (3), Kermen, Florence (3)Kvæstad, Bjarne (4, 5), Farkas, Julia (6)

Rare earth elements, comprising the 15 lanthanoids (LN; IIIb in the Periodic Table) plus yttrium are critical elements for a wide range of applications, including new and traditional industries as…

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Effect of cyclic loading at elevated temperatures on the magnetic susceptibility of a magnetite-bearing ore
2021
Katarzyna Dudzisz1,2, Mario Walter3, Ralf Krumholtz3, Boris Reznik1, Agnes Kontny1

Rocks are often subjected to dynamic stress that occurs during earthquakes, volcanic activity as well as human-induced activities. The aim of this study is to test if mechanical fatigue in…

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Effect of deformation localization on the anisotropy of magnetic susceptibility in natural shear zone
2020
Vladimír Kolář Kusbach, Matěj Machek &Zuzana Roxerová

We derived the relationship between AMS and strain in a marble shear zone by combining rock magnetic studies, detailed microstructural analysis and CPO-based numerical modelling of the AMS. AMS ellipsoids…

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Effect of the fracture aperture distribution on the heat extraction performance from the fractured geothermal systems
Saeed Mahmoodpour, Mrityunjay Singh, Kristian Bär, Ingo Sass

Fractures are main flow paths for heat extraction from fractured geothermal systems. The process of injecting cold water to extract hot water from a fractured reservoir results in thermal and…

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Effects of fluid composition on the precipitation behaviour and shape of minerals
2021
Susan Stipp

Minerals form by the ordered arrangement of atoms. Each mineral has a characteristic form, determined by the electron configuration of the atoms of its structure and the temperature and pressure…

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Efficiency of CO2 storage in saline aquifers using foam co-injection
2020
Xiaocong Lyu (1), Denis Voskov (1,2) & William Rossen (1)

In this study, we investigate CO2-foam injection as a promising technology to increase the security of CO2 sequestration process. To evaluate the performance of CO2-foams in saline aquifers, the Delft…

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Element partitioning during hydrothermal alteration at ultramafic-hosted mineralized systems: insights from the fossil Marmorera-Cotschen hydrothermal system (Platta nappe, SE Switzerland)
2021
Rémi Coltat1, Philippe Boulvais2, Thomas Riegler3, Ewan Pelleter4, Yannick Branquet2,5

Ultramafic-hosted mineralized systems commonly form massive sulphides at the seafloor which are enriched in base (Cu, Zn, Ni), critical (Co) and precious (Au, Ag) metals. In present-day settings, the limited…

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Energy analysis of microseismicity induced by fluid-injection in the Soultz-sous-Forˆets geothermal reservoir
2021
Kamel Drif1,2, Olivier Lengliné1, Jannes Kinscher2, Jean Schmittbuhl1

Between 1993 and 2005, the Soultz-sous-Forˆets reservoir was stimulated through 4 different wells crossing the reservoir at two different levels R3 (about 3km deep) and R5 (about 5km deep). The…

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Energy storage in salt caverns: Technical, regulatory and societal challenges from an energy and mining perspective
2020
Serge van Gessel (1), Isis van Wetten (1), Gregor Schneider (2) & Ingrid Kroon (1)

Rock salt is an abundant mineral typically applied in chemical industry, food industry and road de-icing. Besides extraction from seawater and surface occurrences, subsurface mining is common practice in several…

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Enhancing the contribution of closed systems to geothermal energy generation by increasing the ratio of generated power to the total length of wellbores
2021
Morteza Esmaeilpour, Maziar Gholami Korzani, Thomas Kohl

Geothermal energy extraction through closed systems is a secure approach responding to the global heating demand without contaminating subsurface water and causing seismic events. However, the generated power of conventional…

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Europe’s resilience on raw materials – how did GeoERA contribute
2021
Antje Wittenberg1, Daniel P. S. de Oliveira2, Lisbeth Flindt Jørgensen3, Tom Heldal4, F. Javier González Sanz5

Europe’s Green Transition is a declared key political goal in the European Union. The technology needed to achieve carbon neutrality by 2050 relies heavily on metals and minerals. Responsible sourcing…

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European Minerals Inventory as part of the Mineral Intelligence for Europe
2020
Špela Kumelj(1), Jasna Šinigoj (1), Duška Rokavec (1), Andrej Vihtelič (1), Lisbeth Flindt Jørgensen (2) & David Whitehead (2)

The geographical coverage of the Minerals Inventory is being extended with data from the West Balkan countries as mineral data from this region represented a gap in the existing mineral…

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Evidence for time-variable thickness of the Phanerozoic continental lithosphere in Central Europe
2021
Amr El-Sharkawy1,2, Thomas Meier1, Sergei Lebedev3, Carlos Clemente-Gomez4, Javier Fullea4, Thor Hansteen5

The Phanerozoic lithosphere in Central Europe was formed due to the Caledonian and Variscan Orogenies. It then probably underwent modification and thinning associated with widespread and intense Permian volcanism. Since…

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Evolution and Modeling of the Carbonate-Clastic Permian system in the Jeffara Basin, Central Tunisia
2021
Christos Kougioulis1, Pierre-Olivier Bruna1, Allard Willem Martinius1, Ahmed Nasri2, Ghofrane Laouini2,3, Giovanni Bertotti1

Permian deposits are found in outcrops and in the subsurface of Central Tunisia. Their sedimentary and stratigraphic characteristics and origin are not fully understood and represents the main focus of…

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Evolution from subduction initiation to mature island arc volcanism in the Upper Eocene to Middle Miocene Vitiaz Arc, SW Pacific: Evidence from Malekula Island (Vanuatu)
2021
Kathrin P Schneider1, Karsten M Haase1, Bernard Pelletier2

The oldest volcanic rocks exposed on Malekula Island, now belonging to the New Hebrides Island Arc, formed in the Upper Eocene to Middle Miocene Vitiaz Island Arc, Southwest Pacific. They…

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Exhumation pulses in the Southern Patagonian Andes (Torres del Paine, 51°S)
2020
Nevena Andrić-Tomasevic, Sarah Falkowski, Alireza Aghakhani & Todd A. Ehlers

The Cenozoic exhumational evolution of the Southern Patagonian Andes and its potential tectonic and climatic controls remain poorly constrained. Here, we integrate 21 new and 73 published bedrock thermochronological ages…

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Experimental investigation of hydrogen storage and transport properties in reservoir rocks under the influence of abiotic chemical reactions, microbial metabolism, and „in-situ“ pressures.
2021
Nicolai Thüns1, Garri Gaus2, Ralf Littke2, Helge Stanjek1

Temporary underground storage of molecular hydrogen (H2) in depleted oil and gas reservoirs has recently attracted increasing research interest as it can support chemical industry demands and peak-shaving in the…

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Exploration of the geologic and hydrogeologic conditions for a medium deep borehole high-temperature thermal energy storage system at TU Darmstadt, Germany
2021
Lukas Seib, Bastian Welsch, Matthis Frey, Claire Bossennec, Kristian Bär, Ingo Sass

Solutions for seasonal energy storage systems are an essential component for the reliable use of fluctuating renewable energy sources and to bridge the gap between abundant heat availability from renewable…

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Exploring flooded mines with UNEXUP
2020
Márcio Tameirão Pinto & Luís Lopes

The UNEXUP project (2020-2022), funded by EIT RawMaterials, is a continuation of the Horizon 2020 UNEXMIN project (2016-2019). In UNEXMIN a robotic platform to conduct geoscientific surveys in underground flooded…

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Facies analysis and petrography of Permian sandstones – key for stratigraphy and depositional environment of a new tetrapod track site (Southern Permian Basin, Germany)
2021
Sebastian Germann1, Jörg W. Schneider1,2, Birgit Gaitzsch1, Michael Buchwitz3

The Upper Rotliegend II sandstones of the Mammendorf Quarry in the Flechtingen High near Magdeburg in northern Germany yield an assemblage of continental trace fossils (reptilian and therapsid tracks, scratch…

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Feasibility Study of Monitoring Delft Geothermal Project Using Land Controlled-Source Electromagnetic Method
2021
Mahmoud Eltayieb, Dieter Werthmüller, Guy Drijkoningen, Evert Slob

Delft geothermal project (DAPwell) is a planned geothermal well doublet, where relatively cold water is going to be injected through one well into a low enthalpy geothermal reservoir to produce…

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Felsic veins in gabbros drilled by IODP at Atlantis Bank (Southwest Indian Ridge; Expedition 360): Formation, metamorphism and their role for fluid and mass transfer: first results
2020
Artur Engelhardt, Jürgen Koepke & François Holtz

Hole U1473 (32° 42.3622’ S; 057° 16.6880’ E), located on the summit of Atlantis Bank at the ultra-slow spreading Southwest Indian Ridge was drilled to 789.7 m below seafloor (mbsf)…

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First interpretation of mantle structure in the Alps-Apennines-Carpathian-Pannonian region from teleseismic Vp studies
2020
Marcel Paffrath (1), Mark R. Handy (2), Stefan M. Schmid (3) & Wolfgang Friederich (1)

A pattern of teleseismic Vp anomalies in the greater Alpine area reflect asymmetrical mantle structure in the Alps as well as pronounced orogen-parallel variations. The foreland of the Western and…

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First results of the full scale HT-ATES project in a greenhouse area Middenmeer in the Netherlands
2021
Bas Godschalk, Peter Oerlemans

Agriport A7 is a large-scale greenhouse area in Middenmeer in the Netherlands. The local energy company ECW provides geothermal heat (92ºC, from 2 km depth) to the greenhouses through a…

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FloodRisk: Observations of rising mine water level and micro seismicity in the eastern Ruhr area (Germany)
2021
Martina Rische, Kasper David Fischer, Wolfgang Friederich

FloodRisk is an interdisciplinary project focusing on the effects of mine water level rise in abandoned coal mine regions in Germany. Such effects are heterogeneous ground uplift, stress changes due…

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Forward stratigraphic modelling of marine petroleum source rocks: the case of the Carson Basin
2021
Samer Bou Daher, Erwan Le Guerroué, Paul Jermannaud, Alcide Thebault

Organic matter rich rocks are the main component of any petroleum system. Marine organic matter deposits form a major part of these rocks and are the source of most oil….

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Fracture network characterization and DFN modelling of the Upper Carboniferous, Ruhr Area, Germany
2021
Felix Allgaier1, Benjamin Busch1, Dennis Quandt1, Thomas Niederhuber2, Birgit Müller2, Christoph Hilgers1

Since coal mining in the Ruhr Area has been ceased, mine water drainage is gradually reduced leading to the rise of formation water and groundwater levels. Rising mine water levels…

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Fractures, fluids and hypogenic karsts: key features in carbonate reservoirs and aquifers
2020
Giovanni Bertotti (1) & Stephan de Hoop (2)

Karsts have been documented in a large number of hydrocarbon reservoirs but their origin has generally been attributed to meteoric processes. In the last years, however, it has been increasingly…

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FRAME and MINDeSEA: Where land meets sea in the research, prediction and prospectivity of metallic mineral critical raw materials
Daniel P. S. de Oliveira (1), F. Javier Gonzalez (2) & Antje Wittenberg (3)

Critical raw materials (CRM) made it back on the EU Commission’s (EC) agenda in 2008. To date three CRM lists have been published (2011, 2014, 2017) and a new list…

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FRAME’s (Forecasting and Assessing Europe’s Strategic Raw Materials Needs) innovative research in mineral raw materials on the eve of the EU’s “Green Deal”
2020
Daniel P. S. de Oliveira (1), Maria João Ferreira (1), Martiya Sadeghi (2), Nikolaos Arvanitidis (2), Guillaume Bertrand (3), Sophie Decrée (4), Håvard Gautneb (5), Eric Gloaguen (3), Tuomo Törmänen (6), Helge Reginiussen (2), Henrike Sievers (7), Lídia Quental (2) & Antje Wittenberg (7)

The EU’s Green Deal policy recognises that Europe needs a new growth strategy that transforms the Union into a modern, resource-efficient and competitive economy where 1- there are no net…

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From mountain chains to grains: Tracing Alpine erosion using sedimentary provenance analysis
2020
Laura Stutenbecker

MP4-file (136 MB, 55 min, 18 sec. ) Europe, Alps

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From portals to hubs, dashboards and storymaps – new technologies for easy access and use of geoscientific data
2021
Lars Behrens

Due to constantly changing requirements and needs for easy access and use of geoscientific data, the technology and methods to provide and present this type of data have recently evolved…

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From Poverty to Prosperity: The Real Energy Transition
2021
Scott W. Tinker

The energy dialog varies by economic status. Western Europe and the United States suggest there is clean and renewable vs dirty and non-renewable energy, and further that clean energy is…

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Genomic analysis and molecular dating of core iron transporters suggests early Cyanobacteria could not take up Fe(II) in the Archean ocean
2021
Tristan Cosme Enzingmüller-Bleyl1, Joanne S. Boden2, Achim J. Herrmann1, Katharine W. Ebel1, Michelle M. Gehringer1

Archean Cyanobacteria oxygenated Earth’s atmosphere during the Great Oxygenation Event (GOE) through the action of oxygenic photosynthesis. The photosynthetic apparatus relies on metalloproteins, many of which contain iron. Cyanobacteria use…

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Geo-Rational – Ethics in/for the Geosciences
2021
Martin Bohle1,2,3

Geosciences co-shape the human niche, that is, the planetary network of twinned natural and cultural landscapes. Bundled by global supply chains, human agents (individuals, groups, institutions, corporations) alter the human…

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Geochemical control of hydraulic and mechanical reservoir sandstone properties
2021
Maria Wetzel1, Thomas Kempka1,2, Michael Kühn1,2

Geochemical processes such as mineral dissolution and precipitation alter the microstructure of rocks, and thereby affect their hydraulic and mechanical behaviour. Quantifying and considering these property changes in reservoir simulations…

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Geochemistry, mineralogy, Cu, Zn and Fe isotopic composition of Gossans found in Cyprus-type VMS systems from the Troodos ophiolite
2021
Nina Zaronikola1, Vinciane Debaille1, Sophie Decrée2, Ryan Mathur3, Christodoulos Hadjigeorgiou4

The Troodos ophiolite hosts significant Volcanogenic Massive Sulfide (VMS) systems, well-known as Cyprus-type sulfide deposits. They are mafic type VMS deposits, mainly enriched in copper and zinc and they have…

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Geodata management in a European perspective – The European Geological Data Infrastructure (EGDI)
2021
Dana Čápová2, Jasna Šinigoj3, Marc Urvois4, Matt Harrison4, Patrick Bell5, Margarita Sanabria6, José Román Hernández Manchado6, Mikael Pedersen1, Jørgen Tulstrup1

In 2014, an analysis showed that EU had funded geoscientific data harmonisation projects with several hundred thousand Euros but that only a small fraction of the results were sustained a…

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Geoethics and the responsibility of Geoscientist in society: from research to teaching and outreach
2020
Clara Vasconcelos (1) & Nir Orion (2)

Geoethics emerged as the discipline that studies and reflects upon the values that underpin appropriate human behaviors and practices, whenever humans interact with the Earth. The foundations of geoethics are…

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Geohub: Sustainable Geomodeling
2021
Georg Semmler, Helmut Schaeben, Heinrich Jasper

Digital 3D geomodels are becoming a routine tool for geoscientific research, engineering and surveying. Most models incorporate various datasets into a simplified virtual representation of reality. Turning the process of…

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GeoLaB – Geothermal Laboratory in the Crystalline Basement
2021
Thomas Kohl1, Eva Schill1, Judith Bremer1, Günter Zimmermann2, Olaf Kolditz3, Ingo Sass4

In Central Europe, the largest geothermal potential resides in the crystalline basement rock with important hotspots in tectonically stressed areas. To better harvest this energy form under sustainable, predictable and…

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Geologicaly-sourced H2 exploration: pathfinders, tools, and methods
2021
Laurent Truche, Frédéric-Victor Donze

Recently, the growing demand for carbon-free energy has sparked an unprecedented interest in naturally occurring H2, as it could represent a potential alternative resource to fossil fuels. Throughout the world,…

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Geology – Where? – Horizon Europe and possible approaches to research opportunities in the EU
2020
Andreas Nikolaus Küppers,

The Potsdam Conventus, Germany Embedded in a large structure of legislative and administrative processes, the new research and innovation framework program of the European Union ‚Horizon Europe‘ promises to offer…

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Geology across borders – Towards a consistent interpretation of the subsurface in the Central North Sea covering the Dutch, German and Danish offshore areas.
2021
Hauke Thöle1, Fabian Jähne-Klingberg1, Maryke den Dulk2, Hans Doornenbal2, Finn Christian Jakobsen3, Peter Britze3

Geology does not follow national borders and for many areas of application, it is essential to know the characteristics of the subsurface on both sides of the border. In the…

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Geometric morphometric analysis of potential hybridisation between cave bears (Ursus spelaeus) and brown bears (Ursus arctos) in the late Pleistocene.
2020
Stefan Dehos (1) & Anneke H. van Heteren(1,2,3),

The brown bear (Ursus arctos) is one of the closest living relatives to the extinct Late Pleistocene cave bear (Ursus spelaeus). According to a preliminary analysis late Pleistocene bear skull…

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Geomonitoring as a contribution to process understanding of river
2021
Peter Menzel1, Mohamed Sobh1, Islam Fadel2, Christian Gerhards1

The inversion of gravity data for crustal thicknesses is a nonunique problem. Therefore, additional independent information (e.g., seismic data) is needed to constrain the inversion process. Despite decades of exploration…

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Geomonitoring as a contribution to process understanding of river renaturation in post-mining areas – Example: Emscher catchment
2021
Bodo Bernsdorf, Tobias Rudolph, Benjamin Haske

The Emscher, formerly discredited as the „Köttelbecke“, is being renaturalised at great expense by the EMSCHERGENOSSENSCHAFT / LIPPEVERBAND in the course of post-mining activities. In addition to the Emscher Canal…

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Geophysical borehole logging – using existing data for petrophysical and regional characterisation of claystone formations
2021
Gesa Kuhlmann, Klaus Reinhold

Claystones in the deep subsurface have various barrier-effective properties for solute transport. Changes in the mineralogical composition (incl. fluids), the structure of claystones in the strict sense, as well for…

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Geoscience Education for the Young Generation: mileko – The Mineralogical Science Kit
2021
Maria Mrosko1, Lennart A. Fischer2, Lutz Hecht3, Bastian Joachim-Mrosko1, Malte Junge4, Gilla Simon5, Roland Stalder1

Geosciences only play a minor role in today’s German and Austrian school curricula, although being strongly related to important topics such as climate change and sustainability of resources. The Mineralogical…

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Geothermal potential and opportunities in Vietnam
2021
Viet Cao

Located between the Pacific Ring of Fire and Alpide Belt, Vietnam possesses significant potential geothermal resources, with more than 300 hot spring sites with temperatures from 40oC to 100oC have…

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Geothermal Reservoir Characterisation and Probability Analysis of Fractured Media at Grimsel Test Site, Switzerland
2021
Selvican Türkdogan1,2, Peter Achtziger1

Exploitation of deep geothermal energy is considered as one of the most efficient renewable energy applications. In this sense, reservoir stimulation is established to extract geothermal energy from EGS (Enhanced…

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Geotopes as a tool for geoscience teaching and outreach
2021
Anke M. Friedrich

Traditional geological field education includes organized trips of large student groups to geological outcrops. Typically, instructors guide students to outcrops and give (mini-)lectures, such that the students’ notes consist of…

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GEOWiki@LMU – an online platform for university and school education in geosciences
2021
Magdalena Luise Plitz1, Katrin Mühlberg1, Donja Aßbichler1, Laurin Lidl1, Malte Junge2, Eileen Eckmeier3

GEOWiki@LMU is a constantly growing open platform for the promotion of practical and research-oriented knowledge acquisition elaborated by and for students of earth sciences. The contents are developed by students…

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Giant growth in insular fossil dormice
2020
Jesse James Hennekam (1), Roger J. Benson (2), Victoria L. Herridge (3), Nathan Jeffery (4), Enric Torres-Roig (5), Josep Antoni Alcover (6) & Philip G. Cox (1,7)

Drastic morphological changes often occur within mammalian species during prolonged isolation on islands. The depauperate nature of insular ecosystems is often associated with phenomena known as insular dwarfism and gigantism,…

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GisInfoService – A Web Application of German Aggregates Associations for their Members Dagmar Kesten
2021
Dagmar Kesten

More than 15 years ago the geographical information system GisInfoService was implemented as part of the project ‚GeoRohstoff‘ of the former Commission for Spatial Information Economics (GIW-Kommission). Sponsored by the…

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Granulometric and lithologic control on apatite and zircon concentrations in Alpine fluvial sediment
2021
Daniela Krieg1, Laura Stutenbecker1, Ariane Djahansouzi1, Christoph Glotzbach2

Detrital heavy mineral compositions are controlled by many factors such as mineral fertility in the source rocks and hydraulic sorting. Quantifying and understanding the resulting bias is crucial especially for…

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Granulometric and lithologic control on heavy mineral distribution in Alpine fluvial sediment
2021
Ariane Djahansouzi1, Laura Stutenbecker1, Daniela Krieg1, Christoph Glotzbach2

Heavy mineral studies are dependent on many variables that should be considered in order to avoid erroneous provenance interpretations. Firstly, sediment transported and deposited by larger rivers is the result…

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Gravity forward modelling and inversion based on the updated, enhanced gravity field solution in Antarctica
2021
Theresa Schaller1, Mirko Scheinert1, Philipp Zingerle2, Roland Pail2, Martin Willberg2

Geoscientific studies in Antarctica are extremely challenging due to the remote location of the continent, its harsh environment and difficult logistics. Additionally, the continental crust is covered by an up…

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Gravity survey in delineating geologic features of interest for deep geothermal use at Campus North of KIT.
2021
Maximiliano Pavez1, Natalia Cornejo1,2, Florian Bauer1, Eva Schill1,2

The seasonal mismatch of the thermal energy demand can be addressed by thermal energy storage systems of high capacity (e.g. Lee 2013). In this scenario, High-temperatures aquifer thermal energy storage…

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Ground Motion Emissions from Wind Turbines
2021
Stefan Baisch, Robert Vörös, Christopher Koch

Traffic light systems (TLSs) are used in different energy technologies for limiting the strength of induced seismicity. The TLS concept is based on real-time monitoring of induced seismicity in combination…

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Ground Motion Emissions from Wind Turbines: State of the Art and Implications
2021
Joachim Ritter, Laura Gassner

Wind turbines are massive tall buildings which swing considerably above the ground, especially when they are in operation. These oscillations are composed of the eigenmodes of the whole building and…

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Groundwater exploration and production in arid Jordan
2021
Falk Lindenmaier, Gerhard Kapinos, Mark Gropius, Klaus Holzner, Florian Brückner, Daniel van Rooijen, Rebecca Bahls, Mathias Toll

The water providers of Jordan are constantly seeking to find new water resources to supply the public. Water table depths of up to 250 m, dry aquifers and saline waters…

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Groundwater resources in northern Namibia
2021
Georg J. Houben

The transboundary Cuvelai-Etosha Basin (Namibia/ Angola) is a semi-arid region. Rising population and water demand increase the stress on already scarce water resources. The local aquifers, the perched KOH-0 and…

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Groundwater-systems in mining areas – The influence of water bearing adits
2021
Tobias Rudolph, Christian Melchers, Peter Goerke-Mallet, Detlef Engel

Water bearing adits form a historic near-surface underground drainage and outflow systems whose functionality is of considerable importance in many mining areas all over the world. Water bearing adits are…

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Habitability of early Earth: Liquid water under a faint young Sun facilitated by tidal heating due to a closer Moon
2021
René Heller1,2, Jan-Peter Duda3,4, Max Winkler5, Joachim Reitner6,4, Laurent Gizon1,2

Geological evidence suggests liquid water on the earth’s surface as early as 4.4 Ga when the faint young Sun only radiated about 70 % of its modern power output. At…

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Half-precession signals in Lake Ohrid and their spatial and temporal connection to proxy records in the European realm
2021
Arne Ulfers1, Christian Zeeden1, Silke Voigt2, Wonik Thomas1

Lake Ohrid (North Macedonia/Albania) is Europe’s oldest lake and thus is a valuable archive for changes of local (hydro)climate during the last 1.36 million years (e.g., Wagner et al. 2019)….

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Hans Merensky (1871–1952) – Ein Ausnahmegeologe, Bergmann, Prospektor, zukunftsorientierter Wissenschaftler, Naturschützer und Mäzen. Seine Lagerstättenfunde sind bis heute von großer rohstoffwirtschaftlicher Bedeutung
2022
Wipki, Mario; Röhling, Heinz-Gerd; Gauert, Christoph; Wellmer, Friedrich-Wilhelm

[Hans Merensky (1871-1952) – An exceptional geologist, miner, pro-spector, future-oriented scientist, conservationist and patron. His discoveries of deposits are still of great importance for the raw materials industry today.]  …

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Harmonised data on European raw materials, the creation and content of the MIN4EU database
2021
Lisbeth Flindt Jørgensen1, Eimear Deady2, Špela Kumelj3, Kari Aslaksen Aasly4, Marc Urvois5, Jørgen Tulstrup1, Mikael Pedersen1

European geology ranges from old mountain chains with more or less altered magmatic and sedimentary deposits over glaciogenic materials from the recent Ice Ages to very young marine or alluvial…

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Heterogeneous nucleation and transformation of ikaite (CaCO3 x 6H2O) on mineral surfaces
2021
Samuel Benedikt Strohm, Sebastian Inckemann, Kun Gao, Wolfgang W. Schmahl, Guntram Jordan

One of the most puzzling calcium carbonate minerals is ikaite (CaCO3 x 6H2O). Its formation is of particular importance, because anhydrous calcium carbonate minerals occur as pseudomorphs after ikaite. Consequently,…

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High Precision 3D Modelling of Complex Geological Structures: An Approach Combining Different Types of Software for Maximum Efficiency
2021
Tatjana Thiemeyer, Manuela Stehle, Christian Dresbach, Matthias Beushausen

3D modelling of complex salt structures for the purpose of final disposal of radioactive waste requires a particulary high degree of precision. In this perspective, conventional geological 3D modelling software…

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High temperature aquifer thermal energy storage (HT-ATES) in combination with geothermal heat production on the TU Delft campus: feasibility study and next steps
2021
Stijn Beernink1,2, Martin Bloemendal1,2, Phil Vardon1, Auke Barnhoorn1, Niels Hartog2

One of the most important actions to limit climate change is to decrease worldwide CO2 emissions. A large contributor to worldwide CO2 emissions is the production of heat. Therefore, the…

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High-resolution 3D geological modelling for water safety: the story of the Lek River dike
2020
Romée Kars, Renée de Bruijn, Willem Dabekaussen, Bart Meijninger & Jan Stafleu

A large, densely populated part of the Netherlands is located below mean sea level. The risk of flooding is therefore omnipresent. Dikes are vital for safety, and local waterboards apply…

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Hipercorig Hallstatt History (H3): Accessign a deep time window of Lake Hallstatt´s preHistory
2021
Michael Strasser1, Flavio Anselmetti2, Achim Brauer3, Stefano Fabbri2, Ulrich Harms3, Kerstin Kowarik4, Jochem Kueck3, Richard Niederreiter5, Ortler Marcel1, Ulli Raschke6, Hans Reschreiter4, Martin Töpfer3

The new hydraulic coring system Hipercorig was developed to recover undisturbed long cores from deep lacustrine sediment archives that record past environmental conditions and changes (Harms et al., 2020). Here…

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Holocene erosion and pedogenesis on watersheds of the Central Russian Plain
2021
Ekaterina V. Garankina1,2, Vladimir R. Belyaev1,2, Ilya G. Shorkunov2, Vladimir G. Van1, Anna E. Semochkina1,2

Watershed landscapes of the Borisoglebsk Upland and Suzdal Opolie are characterized by absence of the well-developed early Holocene paleosols suggesting dominantly negative sediment budget. Detailed study of Retisols revealed polycyclic…

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Host influenced geochemical signature in the parasitic foraminifer Hyrrokkin sarcophaga
2021
Nicolai Schleinkofer1,2, David Evans1,2, Max Wisshak3, Janina Vanessa Büscher4,5, Jens Fiebig1,2, André Freiwald3, Sven Härter1, Horst Marschall1,2, Silke Voigt1,2, Jacek Raddatz1,2

Here, we present element to Ca ratios (Mg/Ca, Sr/Ca, Na/Ca and Mn/Ca) and stable isotope data (δ18O, δ13C) of the parasitic foraminifer Hyrrokkin sarcophaga, collected from two different host organisms,…

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How did anoxic conditions affect nitrogen fixing Cyanobacteria on early Earth?
2021
Arianna Gallo1, Katharina Ebel1, Thorsten Bauersachs2, Achim Herrmann1, Michelle M. Gehringer1

The Earth’s atmosphere was without free oxygen until the Great Oxygenation Event, thought to have been driven by oxygenic photosynthesis. The expansion of early Cyanobacteria was proposed to be restricted…

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How did Cyanobacteria survive increased atmospheric O2levels during the Great Oxygenation Event? The role of Superoxide Dismutases (SOD)
2021
Sadia S. Tamanna1, Joanne S. Boden2, Patricia Sánchez‐Baracaldo2, Michelle M. Gehringer1

Cyanobacteria are able to conduct oxygenic photosynthesis and are thought to have been responsible for the Great Oxygenation Event (GOE). The effect of increasing levels of atmospheric O2 on the…

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How minerals govern the advance of weathering: comparison of a shallow and a deep weathering profile in different climatic zones (Chilean Coastal Cordillera)
2021
Ferdinand Jakob Hampl1, Ferry Schiperski1, Nicole Stroncik2, Michael Facklam3, Friedhelm von Blanckenburg2, Thomas Neumann1

Weathering is the fundamental precondition for erosion and soil formation which sculpture Earth´s surface. It is a complex interplay of minerals, rock fabric, tectonical fractures, climate, and organic activity. To…

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How much royalties are paid for hydrocarbon and lignite explorations in Germany?
2021
Philipp Blum, Frederic Berger

The Federal Mining Act (Bundesberggesetz, BBergG) was introduced to govern the use of the German subsurface. By paying royalties, companies obtain permissions to exploit resources in Germany. However, there is…

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How scarce is our water? An analysis of the present and future world water situation
2020
Randolf Rausch

If you look at the media, you come across new horror stories about water almost every day. Experts warn of a life-threatening global water crisis. Reports of droughts, wars for…

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Hydro-mechanical parameters of Cornubian and Odenwald reservoir granitoids with focus on fracture stiffness testing
2021
Lena Muhl1, Guido Blöcher2, Ingo Sass1, Christian Kluge2, Tanja Ballerstedt2

For the resource development, geothermal systems need to be improved to increase the profitability of the investment. One aspect to support this aim is the reservoir productivity, a key parameter,…

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Hydro-Mechanical Simulation in Geothermal Reservoirs: Physics and Surrogate Modeling
2021
Ryan Santoso1, Denise Degen1, Mauro Cacace2, Florian Wellmann1

Hydro-mechanical (HM) simulations are essential aspects of geothermal reservoir studies to assess the heat production and the associated-environmental impacts, such as seismicity. HM simulations are numerically expensive (especially for large-scale…

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Hydro-thermal modeling of geothermal energy extraction from Soultz-sous-Forêts, France using supercritical CO2
2021
Mrityunjay Singh, Saeed Mahmoodpour, Kristian Bar, Ingo Sass

Climate change requires immediate action, and for sustainable development, and uninterrupted energy supply is necessary. Since anthropogenic emission of CO2 in the atmosphere has a major role in climate change,…

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Hydrocarbon Migration and its Implications for Hydrocarbon Exploration and Charge Risk Assessment: Case Studies from the Persian Gulf, Iran
2021
Alireza Baniasad, Ralf Littke

Historically, basin and petroleum system modeling has mainly focused on understanding the burial and thermal history of sedimentary rocks as well as related hydrocarbon generation from kerogen (sedimentary organic matter)…

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Hydrogen and organic molecules generation from water radiolysis: from grave to cradle
2021
Johan Vandenborre1, Laurent Truche2

Water radiolysis is a key process for hydrogen (H2) and abiotic organic molecules generation in the Earth’s crust. The aim of this presentation is to provide some insight into this…

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Hydrothermal processes related to submarine iron ore formation: Insights from Devonian Lahn-Dill-type ores
2021
Leanne Schmitt1,5, Thomas Kirnbauer1, Thomas Angerer2, Dennis Kraemer3, Sabine Klein4,5

Numerous studies on submarine iron-rich sediments (BIF, ironstones, etc.) focus on environmental changes and ocean chemistry, however, many questions related to underlying hydrothermal processes remain unresolved. As proximal chemical sediments,…

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Hydrothermal Synthesis of Low Layer Charge Trioctahedral Smectite
2021
Yi-Yu Liu1, Nils Schewe2, Peter Thissen2, Katja Emmerich1

Smectites are widely used in (geo-) technical applications and are important components of soils. A definition gap exists between the uncharged non-swellable pyrophyllite and talc (ξ = 0) and the…

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Hyperspectral analysis of lacquer peel profiles as quasi-in-situ analysis for tailings exploration
2021
Wilhelm Nikonow, Dieter Rammlmair

Three lacquer peel profiles were prepared from a copper tailings deposit in Central Chile. The peels were taken from two sides at varying depths of the tailings heap. Parallel to…

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Icelandia
2021
Gillian R. Foulger

The potential for the extraordinary island of Iceland to resolve seemingly intransigent problems in Earth Science has long been recognized. Alfred Wegener correctly surmised that his theory of continental drift…

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Identification of magnetic enhancement at hydrocarbon/water contacts
2021
S. Adesope Badejo1,2, Adrian Muxworthy1, Alastair Fraser1, Martin Neumaier1

Pyrolysis experiments and calculated thermostability diagrams show that iron bearing minerals (< 60nm) can be produced inorganically during oil formation in the ‘oil-kitchen’ or be precipitated in the reservoir via...

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Identification of the diagenetic sedimentary environment and hydrothermal fluid fluxes in Southern Ocean sediments (IODP Exp 382) using B, Si and Sr isotopes in interstitial waters
2021
Marcus Gutjahr1, Sonja Geilert1, Bridget Kenlee2, Klaus Wallmann1, Osamu Seki3, Ji-Hwan Hwan4, Michael E Weber5, Maureen Raymo6, Victoria L. Peck7, Trevor Williams8, Florian Scholz1, and Expedition 382 Scientists9

During IODP Expedition 382, two sites were drilled at 53.2°S at the northern edge of the Scotia Sea and three sites at 57.4°–59.4°S in the southern Scotia Sea within the…

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Imaging the warm lithospheric mantle in the Mediterranean-Alpine region: integrated thermochemical inversion of surface wave dispersion, heat flow and elevation data
2021
Carlos Clemente1, Javier Fullea1,2, Amr El-Sharkawy3,4, Thomas Meier3, Sergei Lebedev2, Thor Hansteen5

Here we investigate the thermal structure of the lithosphere in the Alpine-Mediterranean region. We focus on areas characterized by negative velocity anomalies according to a lithosphere-upper mantle surface-wave tomography study…

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Impact of Freeze-Thaw Cycles on hydraulic conductivity of Borehole Heat Exchangers
2020
Jan-Henrik Kupfernagel (1,2), Jan Christopher Hesse (2), Bastian Welsch (2), Markus Schedel (2), Ingo Sass (2) & Lutz Müller (1)

For several reasons, the inlet temperature of the heat carrier fluid in borehole heat exchangers (BHE) may temporarily fall below the freezing point of water. Consequently, freezing and thawing processes…

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Impact of Geological Conditions and Constructional Features on Indoor Radon
2020
Julija Shommet, Rein Koch & Leena Paap

Radon is quite widespread in Estonia, due to complicated geological conditions caused by the appearance of tectonic cracks, graptolitic argillite, phosphorite and also uranium in some places. Geological Survey of…

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Impacts of probabilistic geological realizations in a geothermal reservoir using numerical and statistical investigations
2021
Ali Dashti1, Maziar Gholami Korzani1, Christophe Geuzaine2, Thomas Kohl1

Achieving a (?) reliable geological model is the foremost step in all underground resource assessments. However, regarding the sparsity of data and lack of knowledge, a spectrum of solutions makes…

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Implementation of the Geological Data Act (Geologiedatengesetz): A digital approach of the Geological Survey of Lower Saxony
2021
Robert Schöner, Jan Sbresny, Jörg Elbracht, Nicole Engel, Hans-Jürgen Brauner

Public access to geological data, especially to data from commercial subsurface geological investigations, was claimed for a long time in the German geoscience community. Since June 30th 2020, the Geological…

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Importance of 3d model management to enable FAIR principles for geological models
2021
Paul Gabriel, Daniel Buse, Björn Wieczoreck, Johannes Camin

A high number of 3d geological models are produced every year at mining companies, geological surveys, consulting offices and many other institutions. Many of these models are being created by…

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In-situ silicon isotopes in mantle wedge serpentinites – a new proxy for slab dehydration reactions
2021
Sonja Geilert1, Elmar Albers2, Daniel A. Frick3, Christian T. Hansen2, Friedhelm von Blanckenburg3,4

The Mariana forearc provides a unique natural laboratory to study slab dehydration in an active subduction zone by its deep-rooted mud volcanism. To test if mantle wedge serpentinites would record…

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In-situ trace element and S isotope systematics in porphyry-epithermal pyrite, Limnos Island, Greece
2021
Frederik Börner1, Manuel Keith1, Jonas Bücker1, Panagiotis Voudouris2, Karsten Haase1, Reiner Klemd1, Martin Kutzschbach3

A more sustainable society with CO2 neutral energy production requires substantial amounts of trace metal(loids). However, our understanding about the fractionation processes of these elements between the epithermal and porphyry…

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Increasing the knowledge base for Deep Geothermal Energy Exploration in the Aachen-Weisweiler area, Germany, through 3D probabilistic modeling with GemPy
2021
Alexander Jüstel1,2, Florian Wellmann2, Frank Strozyk1

Deep geothermal energy is a key to lower local and global CO2 emissions caused by the burning of fossil fuels. Different initiatives aim at establishing deep geothermal energy production at…

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Indentation and transfer of deformation between different orogenic systems: the greater Adria – Pannonian – Carpathians system
2020
Liviu Ciprian Matenco & Douwe van Hinsbergen

Indentation is used to define the collisional mechanics of small plates flanked by large subduction systems creating significant thickening and lateral escape of continental units. The close spatial proximity creates…

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Induced micro-seismicity monitoring in urban context using seismic arrays
2021
Rémi Fiori, Jérôme Vergne, Jean Schmittbuhl, Dimitri Zigone, Sophie Lambotte

The modification of the stress field induced by fluid injection into the ground can generate seismic motions. Their monitoring is a key point to limit the occurrence of impacting events….

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Industrial revolution 4.1 – Critical raw materials and their role in the shift towards renewable energy generation and e-mobility
2021
Ernst Bernhard Teigler, Stephan Peters, Torsten Gorka

Most countries are by now committed to the Paris Agreement, which deals mainly with the reduction of greenhouse gas emissions and financing thereof. Crucial pillars driving this greenhouse gas diminution…

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Influence of initial preferred orientations on strain localisation and fold patterns in non-linear viscous anisotropic materials
2020
Tamara de Riese (1), Paul D. Bons, Enrique Gomez-Rivas (2), Albert Griera (3), Maria-Gema Llorens (4) & Ilka Weikusat (5)

Deformation localisation can lead to a variety of structures, such as shear zones and bands that range from grain to crustal scale, from discrete zones to anastomosing networks, and shear…

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Inherited Tectonics and the Control on Late Devonian Deposition in the Intracratonic Williston Basin, USA and Canada
2020
Michael H. Hofmann

The Williston Basin is an intracratonic basin in Canada and the USA, located atop the structurally complex suture zone between the Archean Superior province to the east and the Archean…

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Insights from surface analogues of the Odenwald into the structural architecture of crystalline units in the Northern Upper Rhine Graben
2021
Claire Bossennec1, Matthis Frey1, Lukas Seib1, Jeroen van der Vaart1, Kristian Bär1, Ingo Sass1,2

The Upper Rhine Graben (URG) is a target area for deep geothermal and heat storage projects, as petrophysical and hydraulic properties of the faulted crystalline basement rocks, and the temperature…

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Insights on the evolution of the Himalayas and Tibet from thermomechanical modelling: the role of long-term convergence
2020
Ben S. Knight, Fabio A. Capitanio & Roberto F. Weinberg

The collision of India and Eurasia has resulted in a broad range of structures, from the Himalayan chain to the Tibetan Plateau. The convergence history is characterised by velocities of…

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Integrated 3D gravity and geological modelling in the Subhercynian Basin (Germany) – A modelling strategy for the enhanced study of the basins sedimentary and crustal setting
2021
Christian Olaf Mueller, Jacob Waechter, Alexander Malz

3D geological modelling in highly complex areas with sparse or ambiguous information is affected be conceptual uncertainty, which can be significantly reduced by the integration of gravity data. However, gravity…

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Integrated geological and gravity modelling to improve 3D model harmonization – Methods and benefits for the Saxony-Anhalt/Brandenburg cross-border region (North German Basin)
2020
Christian Olaf Mueller, Jacob Waechter & Alexander Malz

Three-dimensional geological modelling is usually constraint by seismic and borehole data. However, in geological settings of high complexity and sparse, restricted or ambiguous available information additional geoscientific data and methods…

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Interplay of deposition and soil formation in an Upper Triassic playa landscape
2020
Wolfgang Schirmer

The Upper Triassic Burgsandstein (Löwenstein Formation) in Franconia presents a fossil desertlike playa landscape with episodic supply of clastic material. It occurs as sheet wash and river deposits. A tight…

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Intragranular halogen (F, Cl, Br), S and δ37Cl variability as determined by SIMS in sodalite and eudialyte from the Ilímaussaq intrusion, South Greenland
2021
Hans G. M. Eggenkamp1, Michael A. W. Marks1, Thomas Ludwig2, Gregor Markl1

Halogen (F, Cl and Br), S and δ37Cl variations within grains of Cl-rich minerals sodalite and eudialyte from peralkaline rocks of the Ilímaussaq intrusion were determined using Secondary Ion Mass…

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Inverse geochemical modelling demonstrates how weathering and ion surface exchange control groundwater chemistry in the Pra Basin (Ghana)
2021
Evans Manu1,2, Michael Kühn1,2, Thomas Kempka1,2, Marco De Lucia1

Effective implementation of sustainable water resources management is one of the daunting tasks in most parts of the world. The Pra Basin has a high economic importance, hosting most of…

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Inverse modelling of transport distance to reduce ambiguities of microbial and chemical source tracking in karst catchments
2021
Johannes Zirlewagen1, Ferry Schiperski1, Tobias Licha2, Traugott Scheytt3

The identification of contamination sources is vital for water protection, especially in highly vulnerable karst aquifers. Contamination sources might be distinguished by host-specific DNA markers of bacteria (Microbial Source Tracking,…

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Inversion of Borehole Temperature Data Using Surrogate Model
2021
Jia WANG, Fabian NITSCHKE, Emmanuel GAUCHER, Thomas KOHL

The undisturbed or static formation temperature (SFT) is a key objective of the borehole measurements analysis. Conventional methods to estimate SFT require borehole temperature data measured during thermal recovery periods….

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Investigating Nitrate Pollution Sources and NaturalBackground in Groundwater of the Densu Basin: A Model-based Approach
2021
George Yamoah Afrifa1, Larry-pax Chegbeleh1, Patrick Asamoah Sakyi1, Mark Sandow Yidana1, Yvonne Sena Akosua Loh1, Theophilus Ansah-Narh2, Evans Manu3,4,5

Nitrate is one of the dominant chemical pollutants of groundwater, and there is a need to mitigate groundwater pollution in rural, urban and industrial terrains in an aquifer system. The…

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Investigating seasonal mobility of Irish Giant Deer Megaloceros giganteus (Blumenbach, 1799) through intra-tooth multi-isotope analysis
2020
David S. Douw (1) & Tom J. Giltaij (1,2)

The Giant Deer Megaloceros giganteus (Blumenbach, 1799) is an icon of the Ice Age due to their famous antlers, although there has been little focus on isotopic analysis of these…

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IRIS Online (Interactive Raw Materials Information System) of Austria
2020
Piotr Lipiarski (1), Leopold Weber (2), Albert Schedl (1) & Heinz Reitner (1),

The new Austrian digital Interactive Raw Materials Information System IRIS Online allows to display geological, tectonical, geochemical, aerogeophysical maps, maps of metamorphic events, mineral deposits / occurrences a.s.o. simultaneously. The…

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Joining up the Dots: Regional Geology Insights from the Arabian Plate and the Black Sea
2021
Mike Simmons

One of the many attractions of geoscience is the necessity to make predictions. That it is to say, to take observations made at a certain locality and extrapolate the inferences…

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Landslide models and Dam sites visualised in VR
2020
Hans-Balder Havenith

For multiple landslide and two dam sites in Central Asia and SE Europe we have completed geophysical surveys (partly) complemented by borehole drilling. These data were first processed and then…

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Landslide susceptibility mapping on the country scale with data mining techniques in Armenia
2020
Agnieszka Ledworowska (1), Anika Braun (1), Hans-Balder Havenith (2) & Tomás Manuel Fernández-Steeger (1)

Armenia is a country strongly affected by landslides, but still not enough research has been done on landslide susceptibility in this area. Therefore, the main goal of the study was…

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Large hydraulic diffusivity of a single fault
2021
Qinglin Deng1, Guido Blöcher2, Jean Schmittbuhl1, Mauro Cacace2

We provided an approach to estimate hydraulic diffusivity of a single fault by solving the linear diffusion equation in a partly open rough fracture under drained conditions when applying small…

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Large regional structures from puzzle pieces – the hidden Triassic rift on the western flank of the Eichsfeld-Altmark-Swell
2021
Alexander Malz1, Jonas Kley2, Heinz-Gerd Röhling3

The incorporation of regional geologic knowledge is essential to solve multiple geological questions in any defined research area meaning that small-scale observations must fit with general regional interpretations as well…

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Large Scale Experiments on the Tightness of Boreholes under Cyclic Loading
2021
Marcel Schulz, Birgit Müller, Frank Schilling

The transition from nuclear and fossil energy to renewable energy leads to higher fluctuations in energy supply – but storage for power is negligible so far. In underground gas storages…

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Large-scale quantification
2021
Marthe Klöcking1, Bärbel Sarbas2, Wolfram Horstmann3, Stefan Möller-McNett1, Jens Nieschulze4, Caroline Sporleder5, Matthias Willbold1, Gerhard Wörner1

GEOROC is a leading open-access source of geochemical and isotopic datasets and has facilitated thousands of peer-reviewed publications and new avenues of geochemical research. The new Digital Geochemistry Infrastructure (DIGIS)…

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Large-scale quantification of Li in spodumene pegmatite using Laser Induced Breakdown Spectroscopy
2021
Simon Müller, Jeannet Meima

Spatially detailed surface analysis of geological samples and drill cores offers insight into element and mineral distributions on large scales, an important information in ore exploration processes. Laser Induced Breakdown…

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Late Anisian microbe-metazoan build-ups (“stromatolites”) in the Germanic Basin – aftermath of the Permian – Triassic Crisis
2021
Yu Pei1, Jan-Peter Duda2, Jan Schönig3, Cui Luo4, Joachim Reitner1,5

The so-called Permian – Triassic mass extinction was followed by a prolonged period of ecological recovery that lasted until the Middle Triassic. Triassic stromatolites from the Germanic Basin seem to…

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Late Anisian microbe-metazoan build-ups (“stromatolites”) in the Germanic Basin – aftermath of the Permian – Triassic Crisis
2021
Yu Pei1, Jan-Peter Duda2, Jan Schönig3, Cui Luo4, Joachim Reitner1,5

The so-called Permian – Triassic mass extinction was followed by a prolonged period of ecological recovery that lasted until the Middle Triassic. Triassic stromatolites from the Germanic Basin seem to…

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Late Anisian microbe-metazoan build-ups in the Germanic Basin – aftermath of the Permian – Triassic crisis
2021
Yu Pei1, Jan-Peter Duda2, Jan Schönig3, Cui Luo4, Joachim Reitner1,5

The so-called Permian – Triassic mass extinction was followed by a prolonged period of ecological recovery that lasted until the Middle Triassic. Triassic stromatolites from the Germanic Basin seem to…

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Late Cretaceous-Tertiary tectonic inversion of northeastern Asian continental margin: insight from the low temperature thermochronology in NE China
2020
Jianping Zhou (1), Dunkl Dunkl Istvan (1), Yongjiang Liu (2,3), Weimin Li (4) & Hilmar von Eynatten (1)

The Cretaceous Songliao basin in Northeast China and several strongly inverted, smaller satellite basin remnants east of it represent one of the world largest lacustrine basin system. While the burial…

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Latest Achievements with drill core scanning based on Laser Induced Breakdown Spectroscopy applied to 6 meter of drill core through Merensky Reef, Bushveld Complex, South Africa
2021
Jeannet Meima1, Dieter Rammlmair1, Malte Junge2

A 6-meter drill core from Merensky Reef, Bushveld Complex, South Africa, was scanned in detail with a drill core scanner based on Laser Induced Breakdown Spectroscopy. The purpose of the…

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Latest results from the hybrid micro-gravity monitoring of the Theistareykir geothermal field (North Iceland)
2021
Nolwenn Portier1, Jacques Hinderer1, Florian Schäfer2, Philippe Jousset2, Kemal Erbas2, Vincent Drouin3, Siqi Li4, Freysteinn Sigmundsson4, Ingwar Magnusson3, Gylfi Pall Hersir3, Kristjan Agustsson3, Agrismur Gudmundsson5, Egill Juliusson5, Hreinn Hjartasson5, Anette Mortensen5, Jean-Daniel Bernard6

Geothermal energy represents around 30% of the produced electricity in Iceland with a cumulative capacity being equal to 755 MWe (Ragnarsson et al., 2020). In particular, the Theistareykir geothermal plant,…

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Levelized costs and economic impacts of geothermal district heating networks: a decision tree analysis
2021
Astu Sam Pratiwi, Evelina Trutnevyte

Geothermal district heating networks are among the key options to decarbonize the heating sector in the State of Geneva in Switzerland. But the development of geothermal district heating requires high…

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LGRBwissen – the new geoscientific portal for Baden-Württemberg
2021
Isabel Rupf, Frank Baumann

Since 2019, the LGRBwissen internet portal provides freely accessible and reviewed geoscientific information for the state of Baden-Württemberg. With LGRBwissen, the State Office for Geology, Natural Resources and Mining (LGRB)…

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LI@Geo.X – A Laboratory Infrastructure Search Portal for the Geo.X Network
2021
Manja Luzi-Helbing1,2, Christopher Hamann3, Kirsten Elger2, Damian Ulbricht2, Florian Ott2, Marc Hanisch2, Nils Brinckmann2, Hannes Fuchs2, Hildegard Gödde1,2, Roland Bertelmann4, Lutz Hecht3,5

Geo.X is the research network for geosciences in the Berlin and Potsdam metropolitan region and integrates five universities and six extramural research institutions. Our partners are committed to a FAIR…

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Light at the end of the well: A compact and low-cost DIY water level meter
2021
Nils Michelsen

Goundwater level data are a crucial element of water resources assessments. Corresponding measurements are often carried out with electric water level tapes, which are – despite their simple concept –…

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Linking Laser-Ablation ICP-MS analysis and sulfide textures in identifying gold remobilization and enrichment processes in modern seafloor massive sulfides, Kolumbo arc volcano, Greece
2021
Stephanos P. Kilias1, Evangelia Zygouri1, Nikolaos Zegkinoglou1, Manuel Keith2, Thomas Zack3, Daniel J. Smith4, Paraskevi Nomikou1, Paraskevi Polymenakou5

Target settings to secure sustainable access to raw materials include seafloor massive sulphide (SMS) resources. Gold-rich SMS deposits, are often the result of complex interplay of multiple Au enrichment events….

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Lithium exploration, geologic modelling, resource estimation and mine planning for a spodumene-bearing pegmatite deposit in Ontario, Canada
2020
Stephan Peters, Florian Lowicki, Ernst Bernhard Teigler, Torsten Gorka, Florian Beier & Jana Rechner

The growing need for energy storage for e-mobility and other battery-intense applications has created a large interest in the key battery commodity lithium (Li). A recent hard rock lithium exploration…

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Lithospheric architecture from amphibious AlpArray data across the Ligurian Basin
2020
Anke Dannowski (1), Martin Thorwart (2), Heidrun Kopp (1,2), Grazia Caielli (3), Roberto de Franco (3), Ingo Grevemeyer (3), Dietrich Lange (1), Felix Wolf (1), Wayne Crawford (4), Anne Paul (5), Wayne Crawford (4), M'SM71 cruise participants (6), AlpArray Working Group (6),

The Ligurian Basin is located north-west of Corsica at the transition from the western Alpine orogen to the Apennine system. The Back-arc basin was generated by the southeast trench retreat…

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Lithospheric contact of the Western Carpathians with the Bohemian Massif in the light of seismic and new AlpArray gravity data
2021
Dominika Godová1,2, Miroslav Bielik1,2, Pavla Hrubcová3, Roman Pašteka2, Pavol Zahorec1, Juraj Papčo4

The Bohemian Massif represents the largest exposure of rocks deformed during the Variscan orogeny. Western Carpathians form an arc-shaped mountain range related to the Alpine orogeny. In our study, the…

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Living landscapes in the lab, virtually and in real life: causation and a feeling for what happens in research, education and societal impact
2020
Maarten G Kleinhans

The landscapes built by rivers and coasts in conjunction with ecological engineering plant species have been and will be under stress by population pressure and global change. The expertise of…

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Long-term mechanical behavior of claystone
2021
Sibylle Irene Mayr

For decades, claystone is investigated as a likely host rock material for the deep geological disposal of highly radioactive waste. To ensure safe operation, knowledge about the long-term (thermo-hydro-) mechanical…

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Magnesium and calcium isotope fractionation during microbial dolomite formation
2021
Michael Tatzel1,2, Adina Paytan2, Samantha Carter2, Daniel A. Frick3, Francisca Martinez-Ruiz4, Zach A. DiLoreto5, Maria Dittrich5, Tomaso R. R. Bontognali6, Mónica Sanchez-Román7

Microbial mediation is considered an important process for the formation of primary dolomite at ambient temperature. Yet, no structural, mineralogical, chemical or isotopic means exist to discern this mode of…

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Magnetic pore fabrics and how they predict preferred fluid migration paths in porous rocks
2021
Andrea Regina Biedermann

The shape preferred orientation and connectivity of pores in reservoir rocks largely controls fluid migration properties, for example, by defining preferred flow directions. An accurate determination of preferred flow directions,…

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MANAGED AQUIFER RECHARGE (MAR) AR AS A TOOL TO MITIGATE AQUIFER OVEREXPLOITATION: INSIGHTS FROM LOS ARENALES AQUIFER (SPAIN)
2021
Jose David Henao Casas1,2, Enrique Fernández Escalante1, Francisco Ayuga2

Irrigation agriculture in Los Arenales aquifer has resulted in staggering groundwater level declines in the last quarter of the XX century. The objective of this study is to assess the…

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Mandibular morphology of Middle Pleistocene cave bears (Ursus deningeri) from Santa Isabel de Ranero-Bear sector
2020
Anneke H. van Heteren(1,2,3), Mónica Villalba de Alvarado (4,5), Mikel Arlegi (6,7) & Asier Gómez-Olivencia (6,8,5)

The cave of Santa Isabel (301 m above sea level) is located in the Ranero neighborhood (Karrantza, Biscay, Spain) and currently has two openings and approximately 500 m of development….

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Mass movements in Germany – contributions to the landslide susceptibility modeling
2021
Dirk Balzer, Michael Fuchs, Dirk Kuhn, Jewgenij Torizin

The presentation provides an overview about the project “Mass Movements in Germany (MBiD)” jointly implemented by six State Geological Surveys and the Federal Institute for Geosciences and Natural Resources in…

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Measurement of Diffuse Submarine Groundwater Discharge at intertidal puddles at the Königshafen – Sylt
2021
Sebastian Janßen1, Alexandra Nozik1, Ulf Mallast2, Nils Moosdorf1,3

Coastal regions represent a transition between land and sea. From the hydro(geo)logical point of view freshwater and saltwater are coming together here. The groundwater discharge which discharges directly into the…

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Melt inclusions in zircon are powerful petrogenetic indicators and improve zircon thermometry
2021
Dominik Gudelius1, Armin Zeh1, Renat R. Almeev2, Allan H. Wilson3, Lennart A. Fischer4, Axel K. Schmitt5

Melt inclusions in zircon (MIZ) directly reflect the physicochemical state of the magma during zircon growth. However, their potential as geothermometers and petrogenetic indicators is still poorly explored. Therefore, we…

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Mesozoic to Cenozoic exhumation history of the Odenwald and Heidelberg, Germany
2021
Ulrich Anton Glasmacher1, Florian Krob1, Melanie Raupp1, Nicklas Brachmann1, Dunkl István2, Danny Stockli3, Günther Wagner1

In Germany, the first apatite fission-track study was performed in the Odenwald (Wagner 1968) with the results of Mesozoic apatite fission-track ages. The presentation will re-examine the Mesozoic-Cenozoic exhumation history…

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Metal sources in the actively forming seafloor massive sulfide deposit of the Kolumbo volcano: Insight from the basement rocks
2021
S. Hector1, C. G. C. Patten1, S. P. Kilias2, P. Nomikou2, D. Papanikolaou2, J. Kolb1

The shallow submarine Kolumbo volcano , located in the 5 Ma-to-present Aegean volcanic arc in Greece, hosts an active hydrothermal system currently forming polymetallic seafloor massive sulfide (SMS) mineralization on…

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Metallic raw material demand for hydrogen technology in the German steel production 2030
2021
Katharina Steiger1,2, Jochen Kolb1, Christoph Hilgers1

To reach Germany’s climate neutrality goal in 2045, different technological and systematical changes have to be conducted, such as the expansion of renewable energies plants, the shift towards e-mobility and…

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Methane seepage in the northwestern part of the German North Sea
2021
Miriam Römer1, Martin Blumenberg2, Katja Heeschen3, Stefan Schlömer2, Hendrik Müller2, Simon Müller2, Christian Hilgenfeldt1, Udo Barckhausen2, Katrin Schwalenberg2

We studied seafloor characteristics, water column anomalies, and sediment methane geochemistry in the German sector of the central North Sea during a research cruise with the German research vessel Heincke…

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Methods for the extraction of rarer metals and base chemicals from geothermal brines
2021
Hans-Jürgen Friedrich

Geothermal brines may contain a plenty of chemical elements in a wider range of concentrations ranging from trace to bulk concentration level. This makes such brines interesting for the winning…

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Microplastics as a sedimentary component in reefs systems: A case study from the Java Sea
2021
Amanda Utami1,2,3, Lars Reuning1, Olga Konechnaya4, Jan Schwarzbauer4

Microplastic pollution has been reported from coral reef systems all over the tropics. Exposure to microplastics has several negative impacts on coral health. Despite this potential risk for reef systems,…

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Milankovitch-scale paleoclimatic variability recorded in Permian loessite (south-central France)
2020
Lily S. Pfeifer (1), Linda Hinnov (2), Christian Zeeden (3), Christian Rolf (3) & Christian Laag (3,4)

We present the findings from our recent paper wherein rock magnetic data record discernible Milankovitch-scale paleoclimatic variability through the Permian Salagou Formation loessite (south-central France). Analysis and modeling of this…

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Millennial variability, hydrological and limnological changes during MIS3-2 in Lake Petén Itzá, Guatemala.
2021
Rodrigo Martinez-Abarca1, Michelle Abstein1, Hoelzmann Philipp2, Thorsten Bauersachs3, Pérez Liseth1, Stockhecke Mona4, Cohuo Duran Sergio5, Macario Gonzalez Laura5, Schwalb Antje1

Heinrich Stadials and Greenland Interstadials are abrupt climate variations that are observed in the Northern Hemisphere throughout Marine Isotopic Stages (MIS) 3-2. Lake Petén Itzá, northern Guatemala, is a key…

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Mine water rebound in German hard coal mines – geochemical and petrophysical data support for an integrative monitoring plan
2021
Henning Jasnowski-Peters, Barbara M.A. Teichert, Till Genth, Lisa Rose, Christian Melchers

Mine water rebound in German hard coal mine areas operated by RAG AG under the leadership of RAG Foundation is a showcase for post-mining associated research. It is a long-term,…

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Mineral inclusions in detrital garnet – An excellent petrogenetic tool
2021
Jan Schönig

Cold and deep subduction is a characteristic feature of modern-style plate tectonics (MSPT) and a prerequisite for the formation of low-temperature/high-pressure (LT/HP) and ultrahigh-pressure (UHP) rocks. Although having strong implications…

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Mineralogical characterization of podiform chromitite deposit in the Eastern Mirdita Ophiolite, Albania
2020
Malte Junge (1), Ann-Christin Kolb (2), Antje Wittenberg (3), Henrike Sievers (3), Dashamir Gega (4) & Kujitim Onuzi (5)

The Mirdita ophiolite in Albania is part of an ophiolite belt occurring between the Apulian and Pelagonian subcontinents in the Balkan Peninsula. Within the Eastern Mirdita Ophiolite major chromite deposits…

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MINTELL4EU; the European Minerals Yearbook
2021
Eimear Deady1, Špela Kumelj2, Lisbeth Flindt Jørgensen3

The MINTELL4EU project builds upon previous European-wide mineral intelligence projects, including ORAMA, MICA, MINventory and particularly the Minerals Intelligence Network for Europe project (Minerals4EU). In this most recent iteration, we…

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Mobilization of redox-sensitive trace elements during water-rock interaction in presence of siderophores: Effects of solution pH, oxygen fugacity and weathering state
2021
Dennis Kraemer, Michael Bau

Siderophores are important biogenic chelators produced by plants, microbes and fungi, which promote the (bio-)availability of iron and other highly-charged cations in the natural environment. The hydroxamate siderophore desferrioxamine B…

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Modelling 2 Phase Flow in Heterogeneous and Anisotropic Rocks using AFRMs
2020
Paul William, John Glover, Piroska Lorinczi & Saddam Sinan

Geological modelling and flow simulation in the subsurface in heterogeneous and anisotropic media is increasingly common. Unfortunately, conventional modelling using statistical techniques, up-scaling and interpolation to populate the inter-well volume…

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Modelling of fault slip: beyond Mohr-Coulomb?
2020
Mauro Cacace (1), Guido Blöcher, Antoine B. Jacquey (2), Hannes Hofmann (1), Arno Zang (1), Günter Zimmermann (1), Oliver Heidbach (1), Christian Kluge (1) & Magdalena Scheck-Wenderoth (1,3)

In this study, we carry out an evaluation of the potential for induced seismicity arising from hydraulic stimulation of low to intermediate enthalpy porous reservoirs, by taking the geothermal reservoir…

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Modelling Switzerland’s Geology using a Multi-Method Approach
2021
Eva Kurmann, Lance Reynolds

The Swiss Geological Survey (SGS) produces a suite of 3D geological models – both structural and parametric – in an established production environment, on a nation-wide basis. Output consists of…

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Modelling the deposition of the phosphorite layers in Malta and reconstruction of the fauna
2021
Lars Tischer1, Emilia Jarochowska1, Or Bialik2, Fabian Jakob1, Ray Zammit3, Matthias López Correa1, Christian Schulbert1

There are several phosphorite layers within the sedimentary succession of the Maltese Islands. These are related to climatic and ocean circulation pattern changes in the Mediterranean through the late Cenozoic….

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Modelling with the Geowindow
2021
Dominik Conrad1, Tom Klaus1, Gregor C. Falk2, Matthias Faller2

The Geowindow offers an infrastructure to create analog models in geographic contexts, it is a “test tube” for visualization; not only of static images but also to display processes in…

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Molybdenum isotope evidence for forearc mantle recycling at the Tongan subduction zone
2021
Qasid Ahmad1, Martin Wille1, Stephan König2, Carolina Rosca2, Angela Hensel1, Thomas Pettke1, Jörg Hermann1

Molybdenum isotope ratios (δ98/95Mo) of marine sediments constitute an important tracer for paleoredox reconstructions of the ancient ocean. Due to its redox-sensitivity, significant mass-dependent Mo isotope fractionation is induced in…

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Monitoring land subsidence and determining its relationship with groundwater abstraction using PS-InSAR method, Case study of Rafsanjan plain, Iran
2020
Ali Mehrabi (1) & Reza Derakhshani (1,2)

The issue of subsidence is one of the serious problems in the plains of Iran. Rafsanjan plain is also prone to this danger due to the high level of groundwater…

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Monitoring of Methane Emissions at Southern Hydrate Ridge using Deep-Sea Cabled Observatory
2021
Yann Marcon1, Deborah Kelley2, Blair Thornton3,4, Dana Manalang5, Gerhard Bohrmann1

Natural methane gas release from the seafloor is a widespread phenomenon that occurs at cold seeps along most continental margins. Since their discovery in the early 1980s, seeps have been…

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Morphotectonic analysis of the drainage basins on the western border of Lut Desert
2020
Raziye Bashiri (1), Farzaneh Hashemi (2), Reza Derakhshani (1,2), Shahram Shafieibafti (1)

Morphotectonic indices are useful for investigating the effect of tectonic activity in a region. Analysing of these indicators could be applied for zoning an area by using advantages of Geographical…

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Multi-paprameter monitoring at alpine karst springs to identify suitable early-warning indicators for bacterial contamination
2021
Simon Frank, Nadine Goeppert, Nico Goldscheider

In alpine regions, karst springs are important sources of drinking water but highly vulnerable to temporary contamination, particularly in response to rainfall events. This variability of water quality requires rapid…

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Multi-proxy, localised reconstructions of climate and weathering from cave speleothem samples
2021
Christopher Day1, Philip Pogge von Strandmann2, Franziska Lechleitner3, Heather Stoll4

Speleothems (secondary calcium carbonate formations) offer significant potential for recording environmental processes above caves, an area increasingly referred to as the Critical Zone. Speleothems grow for hundreds to millions of…

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Multiphase mass and heat transfer in fractured high-enthalpy geothermal systems
2020
Yang Wang (1), Stephan de Hoop (1), Denis Voskov (1,3), David Bruhn (1,2) & Giovanni Bertotti (1)

Multiphase mass and heat transfer are ubiquitous in the subsurface within manifold applications. The presence of fractures magnifies the uncertainty of the heat transfer process, which will significantly impact the…

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Mutual effects of pH and ionic strength on the mobility of metoprolol in saturated quartz sand
2021
Joshua Sawall, Ferry Schiperski

Emerging micropollutants such as lifestyle drugs, pesticides, and pharmaceuticals are increasingly detected in the aquatic environment. To counter possible threats posed by these pollutants, their transport behaviour needs to be…

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Nachbergbau: Chancen und Herausforderungen
2021
Dennis Quandt1, Tobias Rudolph2, Christoph Hilgers1

Bergbau im 21. Jahrhundert bedeutet auch Alt- und Nachbergbau, immer geknüpft an die Bewältigung post-montaner Herausforderungen und die Langzeit- und Zukunftsaufgaben. Hiermit einhergehend sind Fragestellungen zu den damit verbundenen Kosten…

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Nachweis der Integrität von Salzkavernen zur hoch-frequenten zyklischen Gasspeicherung
2021
Tobias Fabig, Till Popp, Sebastian Knöfel

Untertage-Gasspeicherung stellt eine wesentliche Nutzung des Untergrunds dar. Sie trägt insbesondere zur Stabilität der Energieversorgung bei. Auch in Zukunft kommt der geologischen Kurz- und Langzeitspeicherung stofflicher Energieträger eine große Rolle…

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Natural stone resources and sustainability
2020
Tom Heldal (1) & Jorge Carvalho (2)

Natural stone is perhaps the most widely used building material in the history of human evolution, applied in a range of applications, from the most prestigious monuments of civilisations to…

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Neogene kinematics and structural evolution of the eastern Southern Alps (Giudicarie Belt, Northern Italy)
2020
Vincent Franciscus Verwater (1), Mark R. Handy (1), Eline Le Breton (1), Vincenzo Picotti (2) & Christian Haberland (3)

The eastern Southern Alps formed as a retro-wedge of the Alpine orogen and shortening is partitioned into three kinematically linked fold-and-fault systems: (1) the Giudicarie Bel; (2) the Valsugana Thrust…

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Nephelinites from the Gregory Rift
2021
Michael Marks1, Michelle Siegel1, Mika Henzler1, Thomas Binder1, Simon Braunger1, Thomas Wenzel1, Anatoly Zaitsev2, Andrei Arzamastsev2, Gregor Markl1

Nephelinites are strongly SiO2-undersaturated volcanic rocks that are often associated with phonolites and carbonatites. In the Gregory Rift in East Africa several major nephelinitic-phonolitic volcanoes occur, with some of them…

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New constraints on the Ivrea Geophysical Body at intra-crustal scales: a combination of gravimetry with passive seismology and rock’s physical properties
2021
Matteo Scarponi, György Hetényi, IvreaArray Team

We present a high-resolution investigation of the Ivrea Geophysical Body (IGB) at intra-crustal scales in the Western Alps. The IGB is a sliver of Adriatic lower lithosphere, located at anomalously…

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New insights in the Late Pliocene and Early Pleistocene vegetation and climate stratigraphy of NW Europe
2020
Timme Henrik Donders (1), Alexander Houben (2), Cohen Kim (1), Ding Hao (1), Krom Lisanne (1), Busschers Freek (2), Dearing Crampton-Flood Emily (3), Verreussel Roel (2) & Peterse Francien (1)

The chronostratigraphy and climate record of the Late Pliocene and Early Pleistocene in Northwest Europe was spurred by pioneering work in the 1960’s by Waldo Zagwijn. This period is particularly…

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New phenomena in ESR spectra of iron ores from Kryvyi Rih deposit
2021
Valentyna Dmytrivna Shvets

The electron spin resonance (ESR) spectra of iron ores from Kryvyi Rih deposit have been measured at two different temperatures: 295 K and 150 K. Two samples of ores were…

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New ways to find geoscientific information in Europe. GeoERA GIP-P Search System
Angel Prieto, Margarita Sanabria, Román Hernández & Héctor Sánchez

In Europe there is a considerable amount of geoscientific information of great value to scientists, technicians and to society in general. Discover and access the available information is sometimes not…

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Next step ‚become a geologist‘? Practical approach to senior high school education in geosciences
2020
Andreas Nikolaus Küppers

Attracting young students with high capabilities to a tertiary education in geosciences is of paramount importance for the future progress of Earth sciences and constitutes a central goal in geo-education….

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NFDI4Earth – addressing the digital needs of Earth System Sciences – B Lars Bernard, Jörg Seegert
2021
Lars Bernard, Jörg Seegert

NFDI4Earth addresses digital needs of Earth System (ES) Sciences (ESS). ES scientists cooperate in international and interdisciplinary networks with the overarching aim to understand the functioning and interactions within the…

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No warming in the eastern Gulf of Mexico since 1845 recorded by a Siderastrea siderea coral from Cuba
2021
Marie Harbott1, Henry C. Wu1, Henning Kuhnert2, Simone Kasemann2, Anette Meixner2, Carlos Jimenez3, Patricia González-Díaz4, Tim Rixen1,5

Changes in the surface ocean pH and temperature caused by the uptake of anthropogenic CO2 are posing a threat to calcifying marine organisms. Recent studies have observed significant impacts on…

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Non-linear forcing of climate on denudation in the Alps over the last 75 ka
2021
Apolline Mariotti1, Pierre-Henri Blard1,2, Julien Charreau1, Samuel Toucanne3, Stephan Jorry3, Stéphane Molliex1,4, Team ASTER5

Reconstruction of denudation rates through time is an important task to quantify and understand the impact of climate on landscape evolution. Cosmogenic nuclides have been widely used as a tool…

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North Atlantic sea surface temperature evolution across the Eocene–Oligocene transition
2020
Ilja Japhir Kocken (1), Kasper van der Veen (1), Inigo R. Müller (1), Anna Nele Meckler (2) & Martin Ziegler (1)

The Eocene–Oligocene Transition (EOT, ~34 Ma), is marked by the rapid development of semi-permanent Antarctic ice-sheet1. Foraminiferal stable oxygen isotopes (δ18O) as well as Mg/Ca and other indicators (e.g. ice-rafted…

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Not only beautiful crystals – Alpine-type fissures in the light of quartz fluid inclusion, structural and monazite age data
2020
Christian A. Bergemann (1), Edwin Gnos (2), Joseph Mullis, Emmanuelle Ricchi (4), Emilie Janots (5), Alfons Berger (6)

The retrograde evolution of an orogen is characterized by a variety of processes like tectonic activity in the form of doming, brittle-ductile shearing and a general decrease in temperature conditions….

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Novel Mantle flow retrodictions reveal preferential material flow in the sublithospheric European mantle
2021
Hans-Peter Bunge1, Siavash Ghelichkhan2, Jens Oeser1

The Cenozoic tectonic evolution of Northern Europe involves a number of events that are difficult to reconcile with an intra-plate setting, including magmatic events and topographic changes that are located…

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Numeric calculation of the arithmetic mean for the particle size – its advantage over the phi scale
2020
Ludwig Biermanns

Calculating the arithmetic mean in particle (grain) size, am, with the phi scale (Folk, 1964: 81), is quite complicated. Its calculation, therefore, should be done in the numeric, or arithmetic…

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Numerical Modeling of the 2007-2009 Lava Dome Growth in the Crater of Volcán de Colima, México
2021
Natalya Zeinalova, Alik Ismail-Zadeh

Volcán de Colima is active andesitic stratovolcano in México located at the height of about 3860 m above sea level. It belongs to the Colima Volcanic complex within the Trans-Mexican…

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Numerical modeling of the stress state around the Enguri power tunnel
2021
Thomas Niederhuber1, Birgit Müller1, Thomas Röckel2, Mirian Kalabegishvili3, Frank Schilling1

The Enguri Dam in NW Georgia is one of the highest arch dams in the world. The 15 km power tunnel was initially flooded in 1978. During the rehabilitation project…

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Numerical Modeling to Study the Impact of Pore Characteristics on the Electric Breakdown of Rock for Plasma Pulse Geo Drilling (PPGD)
2021
Mohamed Ezzat, Daniel Vogler, Benjamin M. Adams, Martin O. Saar

Reducing the cost of drilling is crucial to economically extract deep geothermal energy as drilling costs can reach up to 70% of the total investment budget (Tester et al. 2006)….

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Numerical modelling of seasonal underground hydrogen storage in a saline aquifer
2021
Alvaro Sainz-Garcia, Fidel Grandia, Elena Abarca, Jordi Bruno

Current renewable energies are unsteady resulting in temporary mismatches between demand and supply. The conversion of surplus energy to hydrogen and its storage in geological formations is one option to…

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Occurrences and mineralogy of lithium pegmatite in eastern Canada and for example the Georgia Lake pegmatite in more detail
2021
Stephan Peters, Florian Lowicki, Ernst-Bernhard Teigler, Torsten Gorka, Florian Beier, Jana Rechner

Eastern Canada hosts several occurrences of lithium pegmatite, which have recently come into the focus of exploration activities and detailed studies. Driven by the current and expected future demand for…

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On GPS-IR technique for measuring shallow sediment compaction
2021
Makan Karegar

The solid Earth aspects of relative sea-level change can dominate in low-lying coastal areas with potentially vulnerable to accelerating rates of sea-level rise. Global Positioning System (GPS) as companion tools…

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On Mesozoic uplifts along the SW edge of the East European Craton – new insight from regional onshore (PolandSPAN) and offshore (BalTec) seismic reflection data from Poland
2021
Piotr Krzywiec1, Łukasz Słonka1, Aleksandra Stachowska1, Quang Nguyen2, Michał Malinowski2, Christian Huebscher3, Regina Kramarska4, Niklas Ahlrichs5

East European Craton (EEC) in Poland has been recently studied by onshore PolandSPAN and offshore BalTec regional seismic surveys. PolandSPAN data imaged earliest Late Jurassic, earliest Late Cretaceous and mid-Late…

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On the infrasound emission generated by wind turbines
2021
Lars Ceranna, Peter Gaebler, Gernot Hartmann, Patrick Hupe, Christoph Pilger, Andreas Steinberg

Aerodynamic infrasonic signals generated by wind turbines can be detected by highly sensitive micro-barometers showing spectral peaks at the blade passing harmonics, which are above the background noise level. As…

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On-site hydraulic and mechanical characterization of a claystone around a non-lined test tunnel in Mont Terri, Switzerland
2021
Sina Hale1, Xavier Ries1, David Jaeggi2, Philipp Blum1

The rock mass around man-made underground structures inevitably experiences major changes in hydraulic and mechanical properties, commonly referred to as excavation damage. In host rock formations for underground nuclear waste…

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OneGeochemistry: Enabling a coordinated online global network of multiple distributed geochemical repositories and databases
2021
Kerstin Annette Lehnert1, Lesley Wyborn2, Dominik Hezel3, Alexander Prent4, Kirsten Elger5, Geertje ter Maat6, Marthe Klöcking7, Jens Klump8

Since the discipline of ‘geochemistry’ was first defined in 1838, geochemical data has been pervasively acquired and used in the Earth, environmental and planetary sciences and become fundamental for understanding…

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Open-source and open data: combining both worlds for optimised decision making in geological subsurface models
2021
Florian Wellmann1, Miguel de la Varga2, Alexander Jüstel3

Open data and open-source code are influencing each other: the availability of open data sparks new developments for data analysis and processing. Open-source codes on the other hand have the…

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Optimized coverage of potash tailings piles
2021
Lydia Rösel

Saline contaminants from potash mining endanger aquatic ecosystems. Uncovered potash tailings piles release high amounts of chloride and sodium. Conventional coverage systems with a transpiration-intensive vegetation on a soil layer…

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Orbital and glacial/interglacial forcing reflected by integrated environmental magnetic and colorimetric parameters of a loess-palaeosol sequence in the middle Danubian Basin for the last 430 ka
2020
Christian Laag (1,2,3), Christian Zeeden(2), Ulrich Hambach (3,4), , Mladjen Jovanovic (5) and Slobodan Marković (5,6)

Loess-palaeosol sequences (LPSs) are valuable records of Quaternary environmental change especially in the northern hemisphere. In Eurasian LPS, the alternation of loess and palaeosol intervals reflects the uninterrupted but fluctuating…

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Orbital forcing of Triassic megamonsoon activity documented in lacustrinesediments from Ordos Basin, China
2020
Runjian Chu (1), Huaichun Wu (1), Rukai Zhu (2) & Qiang Fang (1)

The “hothouse” Triassic climate provides a key window to study megamonsoon systems. However, high-quality paleoclimate proxy records are rarely reported from the Tethys realm, where the seasonal meridional migration of…

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Out in the Field – Digital Documentation from Dirt to Desktop
2021
Jens Klump1, Shawn Ross2, Nathan Reid1, Brian Ballsun-Stanton2, Steve Cassidy2, Penny Crook2, Ryan Noble1, Adéla Sobotkova3

Documentation of sample collection and instrument deployment in the field is time-consuming, error-prone and laborious. Even though best practices in research data management suggest that data should be captured in…

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Palaeofloral response to base level changes in the late Permian Bowen and Galilee basins (Australia)
2021
Alexander Wheeler1, Joan Sharon Esterle2, Annette Elizabeth Götz3

A variety of depositional environments characterise the infill of the late Permian Bowen and Galilee basins. These range from proximal fluvial-floodplain sequences and significant coal deposits through to more distal…

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Paleoclimate reconstruction using Pleistocene paleosols along the middle Atbara River in Eastern Sudan
2021
M. Mohammednoor1,2,3, R. Bussert1, S. Tsukamoto4, M. Richter4, O. El Bedri5, B. Kraatz6, K. Salih7, J. Müller2, A. Eisawi7, F. Bibi

Along the middle Atbara River, Pleistocene alluvial sediments dated to ~200 to 20 ka are exposed in eastern Sudan over a length of about 200 km with a maximum thickness…

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Paleogene polar plankton and paleoproductivity: new proxy data from the Eocene – Oligocene transition
2021
Gayane Asatryan, Volkan Özen, Gabrielle Rodrigues de Faria, David Lazarus, Johan Renaudie

Polar plankton plays a large role in global carbon cycling. There is a significant lack of knowledge of these biotas, however. The main goal of our project is to understand…

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Parameters for the design of HDD installed power cables in soil and rock
2020
Ingo Sass (1,2), Maximilian Eckhardt (1) & Markus Schedel (1,2)

When operating buried power cables, the mechanical and thermal properties of the cable bedding need to meet certain requirements. On the one hand, positioning and protection of the cable and…

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Parametric optimization and comparative study of an organic Rankine cycle power plant for two-phase geothermal sources
2021
Chaofan Chen1,2, Francesco Witte3, Ilja Tuschy3, Olaf Kolditz1,2, Haibing Shao1

For two-phase geothermal resource, Organic Rankine Cycle (ORC) based binary plant is often applied for power production. In this work, a network topology was built with the Thermal Engineering Systems…

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Participation of Potential Visitors in an Exhibition Concept Based on an Online Survey
2021
Lina Seybold1, Simon Schneider1, Malte Junge2, Melanie Kaliwoda2, Gilla Simon1

A new Geosciences campus will be built in central Munich, that will also house an innovative exhibition on geosciences, the Forum der Geowissenschaften. A team of scientists, curators and museum…

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Passive Subsurface Characterisation (PSC): Using the groundwater response to Earth tides and atmospheric pressure
2021
Gabriel C. Rau, Philipp Blum

Characterising subsurface hydraulic and geomechanical properties is a prerequisite for Earth resource management. Traditional approaches such as hydraulic testing are costly and require specific infrastructure as well as expertise which…

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Performance of manganese oxide sorbents for direct lithium extraction from geothermal brines
2021
Klemens Slunitschek, Jochen Kolb, Elisabeth Eiche

Lithium is one of the critical elements for the realization of electric mobility and energy transition. With a contribution to global Li-production and recycling of less than 1% (2017), Europe…

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Permeability available for VMS source fluids in altered and fractured lavas in the oceanic crust, Semail ophiolite, Oman
2021
Alannah C. Brett, Larryn W. Diamond

The distribution of permeability in the upper oceanic crust controls hydrothermal circulation and the water–rock interactions that feed seafloor mineralization. A prevailing view is that lavas behave as fractured aquifers…

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Petrographic characterisation of the Algeciras Unit, Campo de Gibraltar Complex, S Spain
2021
Heike Koch, Tom McCann

The Cenozoic-age Algeciras Unit is a deep-marine unit cropping out between Algeciras and Tarifa and forms part of the Campo de Gibraltar Complex (Flysch Trough Units) of southern Spain. The…

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Petrography and geochemistry of the Middle–Upper Jurassic Banik section, northernmost Iraq – Implications for palaeoredox, evaporitic and diagenetic conditions
2021
Nagham Omar1, Tom McCann1, Ali I. Al- Juboury2, Sven Oliver Franz1

Lithological, petrographic, and geochemical analysis of the Middle to Upper Jurassic succession (i.e. Sargelu and Naokelekan formations) from northernmost Iraq were undertaken. The aim was to provide an updated discussion…

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Petrology and Geochronology of foidites and melilitites in SW Germany and E France
2021
Thomas Binder1, Benjamin F. Walter2, Michael A. W. Marks1, Axel Gerdes3, Aratz Beranoaguirre3, Thomas Wenzel1, Gregor Markl1

Foidites and melilitites are strongly SiO2-undersaturated rocks that form by extremely low degrees of partial melting of the metasomatically overprinted lithospheric mantle. In Central Europe, they occur in volcanic fields,…

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Petrophysical Evaluation of Nubian Sandstone Reservoir Sarir Field – Southeast Sirt Basin
2020
Reema Omar Mohammed

The work was carried out to evaluate the petrophysical characteristics of Nubian sandstone in Sarir field. The data used in this study were mainly wire-line logs from three wells (D11-BLK9,…

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Phase mixing in the Lanzo upper mantle shear zone (Italy)
2020
Sören Tholen & Jolien Linckens

How fine-grained, well-mixed (ultra)mylonitic layers in the upper mantle form is still unclear. Here, microfabrics displaying the transition from porphyroclasts to mixed assemblages were analyzed regarding their phase assemblage, grain…

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Pore Detection and modelling with Deep Neural Networks
2020
Christoph Schettler

The description of drilling probes due to their porosity is an important research subject in terms of searching for nuclear waste repositories. Th current techniques use raster electron microscope pictures…

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Pore-scale modeling of acid etching in a carbonate fracture
2021
Renchao Lu1, Xing-yuan Miao2, Olaf Kolditz1,3,4, Haibing Shao1

Acid fracturing technique has been widely used in the oil and gas industry for improving the carbonate reservoir permeability. In recent years this chemical stimulation technique is borrowed from the…

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PostMinQuake: Potential Learnings of induced seismicity during post-mining in European coal regions
2021
Maria Paloma Primo Doncel, Peter Goerke-Mallet, Stefan Möllerherm, Tobias Rudolph

The task of this European research project (PostMinQuake) is to identify mechanisms, relevant parameters and dependencies causing post-mining seismicity for several European coal regions.   When closing an underground coalmine,…

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Postnatal growth rates of the dwarf hippo Phanourios minor from the Pleistocene of Cyprus
2020
Anneke H. van Heteren(1,2,3) & P. Martin Sander (4)

Cyprus, in the Pleistocene, was extremely isolated from a geological and biogeographical point of view. Only two macromammals successfully colonised the island before the Holocene: Elephas cypriotes, approximately 1.4 metres…

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Potential flach lagernder Salzformationen in Deutschland als Standort für ein Endlager für wärmeentwickelnde radioaktive Abfälle
2021
Till Popp, Ralf Günther, Dirk Naumann

Seit 2013 hat in Deutschland die Standortsuche für ein Endlager für hochradioaktive Abfälle mit dem ersten Standortauswahlgesetzes (StandAG) neu begonnen. Viele Jahrzehnte lang wurde in Deutschland die Entwicklung von Endlagerkonzepten…

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Powering primordial life – endogenous-exogenous interactions in Earth’s oldest habitats
2021
Helge Mißbach

Hydrothermal activity, triggered by endogenic processes, distributes and redistributes organic matter through diffuse flow networks and may lead to a production of organic matter via abiotic synthesis. Today, hydrothermal seepage,…

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Pre-processing of gravity data for 3 D-modelling of the lithospheric underground in the Ligurian Sea
2021
Philipp Tabelow, Hans-Jürgen Götze

The Ligurian Sea in the western Mediterranean Sea is a back arc basin created through the Apennines Calabrian subduction zone between 30 and 15 Ma ago. The inner geological structure…

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Pre-Variscan (Lower Devonian) deformation of the Silurian magmatic arc of the East Odenwald (Mid-German Crystalline Zone, Variscides)
2021
Henri Paul Meinaß1, Wolfgang Dörr2, Eckardt Stein1

The Böllstein Odenwald is forming a large anticline of mainly pre-Devonian rock in the Mid-German Crystalline Zone (MCGZ). The contact between core and schist envelope of the anticline is well…

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Preliminary cyclostratigraphy on planktonic foraminifera from IODP-Hole U1406A
2020
Alessio Fabbrini (1), Luca Foresi (2) & Fabrizio Lirer (3)

Cyclostratigraphy reconstructs astronomical-periodic signals in quantitative data from climate-sensitive proxies, as microfossils, carbonate content, isotopic data or any physical properties measurable at sufficient resolution. The astronomical cycles strongly influence the…

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Preliminary results of in situ trace elements analyses of base metal sulfides from the sediment-hosted Dolostone Ore Formation (DOF) copper-cobalt deposit, northwestern Namibia
2020
Viktor Bertrandsson Erlandsson (1), Rainer Ellmies (2), Frank Melcher (1), Daniela Wallner (1) & Johann Raith (1)

Preliminary results of in situ trace elements analyses of base metal sulfides from the sediment-hosted Dolostone Ore Formation (DOF) copper-cobalt deposit, northwestern Namibia

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Preservation of the geological and industrial heritage of a post-mining landscape by the example of the glacial Muskau Arch
2021
Kersten Löwen

The Muskau Arch in the border triangle of Brandenburg-Saxony-Poland is a push moraine that was folded up by the Muskau Glacier during the second Elster surge about 340,000 years ago….

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Probabilistic Geomodeling: Recent Developments and Relationship to Reality
2020
Florian Wellmann (1,2,3), Miguel de la Varga (1,3), Jan von Harten (1,3), Alexander Schaaf (4), Elisa Heim (1,5), Fabian Stamm (3), Zhouji Liang (1,2), Stefan Crummenerl (1), Alexander Jüstel (1,6) & Nilgün Güdük (1)

Geological models, as 3-D representations of subsurface structures and property distributions, are used in many economic, scientific, and societal decision processes. These models are built on prior assumptions and imperfect…

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Probabilistic Machine Learning for improved Decision-making with 3-D Geological Models
2021
Florian Wellmann1, Miguel de la Varga2, Nilgün Güdük3, Jan von Harten1, Fabian Stamm2, Zhouji Liang1, s.Mohammad Moulaeifard1

Geological models, as 3-D representations of subsurface structures, can be combined with gravity inversions to obtain geometric representations of geological objects with similar porperty distributions. These models are built on…

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Prospectivity mapping of phosphor in Europe; a part of the GEOERA-FRAME project
2020
Martiya Sadeghi (1), Guillaume Bertrand (2), Sophie Decree (3), Daniel P. S. de Oliveira (4)

The prime aim of WP 3 in the FRAME project is to produce a map of Strategic and Critical Raw Materials (SCRM) for Europe. Another main objective is the predictive…

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Proximal to distal grain-size distribution of basin-floor lobes: A study from the Battfjellet Formation, Central Tertiary Basin, Svalbard
2021
Yvonne T. Spychala1, Thymen A.B. Ramaaker2, Joris T. Eggenhuisen2, Sten-Andreas Grundvåg3, Florian Pohl4, Sara Wroblewska5

The grain-size distribution of sediment particles is an important aspect of the architecture of submarine fans and lobes. It governs depositional sand quality, and reflects distribution of particulate organic carbon…

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Quantification of geogenic arsenic in clay-plug sediment of Holocene floodplains
2020
Santosh Kumar (1), Devanita Ghosh (2), Marinus Eric Donselaar (1,3), Floortje Burgers (1) & Ashok Kumar Ghosh (4)

Shallow aquifers in Holocene flood basins around the world are loci for the pollution of arsenic, which poses a severe health threat to millions of people. Groundwater is the prime…

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Quantification of uranium diffusion and sorption within a geochemical gradient in the Opalinus Clay on the host rock scale
2021
Theresa Hennig1,2, Michael Kühn1,2

In Claystones, the storage concept for spent nuclear fuel mainly consisting of uranium is based among others on the isolation of the radionuclides within the effective containment zone due to…

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Quantifying carbonate denudation from cosmogenic 36Cl and climatic and tectonic controls on carbonate landscape evolution
2021
Richard F Ott1,2, Sean F Gallen3, David Helman4,5

Quantifying carbonate denudation and the partitioning between chemical and mechanical surface lowering in karstic areas is challenging. Here we present a compilation of 36Cl denudation rates from alluvial samples in…

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Quantifying grain-contact and grain-volume stress-strain fields in simulated sandstone: a high-resolution FEM approach
2020
Takahiro Shinohara, Cedric A.P. Thieulot and Suzanne J.T. Hangx

Fluid extraction from subsurface reservoir sandstones frequently results in surface subsidence and induced seismicity, such as observed in the Groningen Gas field (the Netherlands). The cause lies in reservoir compaction…

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Quantitative assessment of the terrain transformation in proglacial areas (the Djankuat River catchment case study, Caucuses)
2021
Andrei Kedich1,2

Proglacial areas are extremely unstable and characterized by highly intensive geomorphic processes. In this study, we consider a typical proglacial area on the Caucuses – Djankuat river catchment. This research…

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Quartz ballen structures and related cristobalite in impact breccias from the Ries crater, Germany, formed from dehydration of impact-generated diaplectic silicaglass
2020
Fabian Dellefant (1), Claudia A. Trepmann (1), Melanie Kaliwoda (2), Kai-Uwe Hess (1), Wolfgang W. Schmahl (1,2) & Stefan Hölzl (3)

“Ballen structures” of quartz and cristobalite aggregates have been observed in impactites from a number of terrestrial impact structures, predominantly from impact melt rocks, suevites, and target rock clasts affected…

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Raman spectroscopy as a functional scientific examination method for minerals, rocks and meteorites in the modern Geosciences
2021
Melanie Kaliwoda1, Malte Junge1, Felix Hentschel1, Wolfgang W. Schmahl1, Fabian Dellefant2, Claudia Trepmann2

Raman spectroscopy is becoming an increasingly important investigative tool in modern geosciences. So it has been applied in the examination of a variety of materials, including meteoritic and igneous rocks,…

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Rare earth elements and yttrium in naturally grown duckweeds: a pathway into the food web
2021
Anna-Lena Zocher, Franziska Klimpel, Dennis Kraemer, Michael Bau

Rare Earths and Yttrium (REY) have become pivotal constituents of many high-technology products and processes. Their widespread use has led to a growing release of (“anthropogenic”) REY into the environment…

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Rare Earth Elements and Yttrium in shells of invasive mussel species Corbicula fluminea and ambient waters from the Elbe and Weser rivers, Germany
2021
Keran Zhang, Anna-Lena Zocher, Chen Luo, Michael Bau

Rare Earths and Yttrium (REY) are widely used in many domains, resulting in anthropogenic input into the environment. However, still little is known about their uptake and bioavailability towards aquatic…

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Raw Material Potential from Historic Mine Sites
2020
Henrike Sievers (1), Petr Rambousek (2), Monica Serra (3), Antje Wittenberg (1) & Daniel Oliveira (4)

The raw materials required by the European industry, especially metallic raw materials, are largely imported into the EU. Thus, Europe’s economic and social wellbeing relies on supplies from international sources…

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Raw materials – you can’t do well without them
2020
Antje Wittenberg (1), Daniel P. S. de Oliveira (2), Lisbeth lindt Jorgensen (3), F. Javier Gonzalez (4), Henrike Sievers (1), Lídia Quental (2), Aurete Pereira (2), Tom Heldal (5) & David Whitehead (3)

“Raw materials, you can’t do well without them”. This statement echoes the needs for a reliable raw materials supply chain. Awareness of raw materials is an essential element for the…

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Raw materials for our everyday life in the context of museum education
2021
Malte Junge, Melanie Kaliwoda, Wolfgang W. Schmahl

The need of raw materials for our society and our everyday life steadily increased during the last decades. In particular, the technological development demands for a secure supply as well…

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Re-mining as remediation method for critical metals (Be and W) in historical skarn tailings
2021
Lina Hällström

Critical metals (CM) are important to develop a sustainable society in the EU. Today, more than 80% of most CM are imported and EU is striving for a higher internal…

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Reasons and implications of fossil hydraulic gradients in large-scale aquifer systems
2021
Stephan Schulz1, Hyekyeng Jung1, Marc Walther2, Nils Michelsen1, Randolf Rausch1, Christoph Schüth1

Due to limited availability of surface water, many arid and semi-arid countries have to rely on their groundwater resources. Despite the quasi-absence of present-day replenishment, some of these aquifers contain…

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Reasons for extreme Th/U zoning of zircon in magmatic rocks: examples from the Bushveld Complex Armin Zeh1, Dominik Gudelius2, Allan H Wilson3
2021
Armin Zeh1, Dominik Gudelius2, Allan H Wilson3

Zircons of magmatic rocks can show enormous variations in Th/U ratios (0.2 to 100) and extreme Th/U zoning. We present data from felsic and mafic rocks of the Bushveld Complex…

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Reassessing evidence of Moon-Earth dynamics: No evidence of shorter lunar months from tidal bundles at 3.2 Ga (Moodies Group, Barberton Greenstone Belt)
2021
Christoph E. Heubeck, Tom Eulenfeld

The sole Archean data point to reconstruct past orbital parameters of the Earth’s moon is from the Moodies Group (ca. 3.22 Ga) of the Barberton Greenstone Belt. From time-series analysis…

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Recent case studies and advances of the magnetotelluric method in geothermal exploration
2021
Friedemann Samrock

The magnetotelluric (MT) method is a well-established tool in geothermal exploration. Case studies from all over the world and from different geothermal settings have proven its effectiveness, when it comes…

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Recent headwall deglaciation and retreat from cosmogenic 10Be in medial moraine debris of a Swiss valley glacier
2021
Katharina Wetterauer1, Dirk Scherler1,2, Leif S. Anderson1,3, Hella Wittmann1

Debris-covered glaciers are fed from steep bedrock hillslopes that tower above the ice, so-called headwalls. Recent observations in high-alpine glacial environments suggest that rock walls are increasingly destabilized due to…

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Reconstruct sedimentation rate and time from downhole logging data at Lake Chalco, Central México
2021
Mehrdad Sardar Abadi, Christian Zeeden, Thomas Wonik

Understanding the evolution of lower latitude climate from the most recent glacial periods to post-glacial warmth in the continental tropical regions has been obstructed by a lack of continuous geological…

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Reconstruct the evolution of Milankovtich cycle in Paleozoic and Proterozoic and Earth-Moon separation history
2021
Maoyang Zhou, Huaichun Wu, Qiang Fang

At present, it is difficult to obtain numerical astronomy solutions prior to 50 Ma , which should be two reasons for this. First, the solar system’s chaotic behavior, namely, small…

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Reconstructing past ice sheets and paleotopography using observations of past sea level and glacial geology
2021
Evan James Gowan1,2,3

During the Quaternary, large ice sheets repeatedly formed and retreated over continental North America and northern Europe, which in turn caused fluctuations in global sea level by up to 120…

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Reconstruction of high-resolution lake level and its astronomical forcing during the Paleogene
2020
Meng Wang (1) & Mingsong Li (2)

Challenges in continental sequence stratigraphy and typically limited resolution in geochronology hinder the understanding of paleolake evolution and hydrocarbon exploration in terrestrial basins. The Dongpu Depression in North China is…

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Reconstruction of microbial habitats through deep time: an isotope geochemical perspective on stromatolites
2021
Sebastian Viehmann

Stromatolites are laminated, presumably microbial, structures, consisting largely of an authigenic precipitate, and manifest the appearance of microbial life in the geological rock record at least 3.4 Ga ago. Thus,…

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Recovery of lithium by ion-exchange in zeolitic materials
2021
Rosa Micaela Danisi, Frank Schilling

More than 70% of the global lithium resources are not solid minerals but dissolved salts within continental brines or geothermal waters. Critical issues in the exploitation of such deposit include…

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Recrystallization and deformation mechanisms in the NEEM deep ice core, Greenland
2020
Ernst-Jan Kuiper (1), Martyn Drury (1), Gill Pennock (1), Hans de Bresser (1) & Ilka Weikusat (2)

Understanding the evolution of lower latitude climate from the most recent glacial period of the latest Pleistocene to post glacial warmth in the continental tropical regions has been obstructed by…

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Recurrent continent-scale hiatus surfaces in Europe and links to upper mantle flow
2021
Berta Vilacís, Jorge N. Hayek, Hans-Peter Bunge, Anke M. Friedrich, Sara Carena

Mantle convection is a fundamental driving force for the tectonic activity of our planet. It is commonly perceived that mantle convection is difficult to constrain directly. Its processes, however, affect…

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Redox conditions during deserpentinization in western Elba Island, Italy
2021
Malte Kalter1, Wolfgang Bach2

The observation of oxidized arc melts has led to a discussion about the redox conditions during the dehydration reactions of serpentinites in subduction zones. The discussed range of oxygen fugacities…

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Reducing exhumation uncertainties in basin modelling: Source rock maturation history of the Southern Chotts Basin, Central Tunisia
2020
Jos Kwakman, Pierre-Olivier Bruna & Giovanni Bertotti

The primary reservoirs present in the Southern Chotts Basin, Central Tunisia, are located within Triassic-, Permian- and Ordovician units. They are mainly sourced by the Silurian – Lower Devonian Fegaguira…

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Regional deformation imprints from anisotropy of magnetic susceptibility data – an example from the Raichur Schist Belt (Dharwar Craton, India)
2021
Santu Biswas1, Manish A Mamtani1, Agnes Kontny2, Christoph Hilgers2

The Raichur Schist Belt (RSB) is a NW-SE trending late-Archaean greenstone belt that forms part of the supracrustal units lying over an older gneissic basement. Granites (ca 2.5 Ga) occur…

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Relative Importance of Climate and Humans on Water Storage Changes using GRACE Satellite Data
2021
Bridget R. Scanlon

Understanding climate and human impacts on water storage is critical for sustainable water-resources management. Here we assessed causes of total water storage (TWS) variability from GRACE satellites by comparison with…

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Release of beryllium (Be) and tungsten (W) from historical mine tailings and the environmental impact on epilithic water diatoms in downstream surface water
2021
Lina Hällström

There is a potential risk that geochemical cycles of critical metals (e.g Be and W) will be affected in the pristine environment, when mining of these metals increases to meet…

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Relict permafrost features identification in landscape and deposits of Borisoglebsk Upland, Central European Russia
2021
Ekaterina V. Garankina1,2, Vasily A. Lobkov1, Ilya G. Shorkunov2, Vladimir R. Belyaev1,2

Relict permafrost features (RPF) indicated by specific patterns of soil, sedimentary and landform structure are characteristic of Central Russian Plain watersheds. Paleocryogenic polygonal networks appear in a pattern of semi-regular…

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Reservoir characterization of the coal-bearing Upper Carboniferous clastic succession, Ruhr area, Germany
2021
Jonas Greve1,2, Benjamin Busch2, Dennis Quandt2, Christoph Hilgers2

Due to the closure of coal mining in the northwestern German coalfields, active mine water drainage becomes technically redundant. As a result, the rising mine water table affects the subsurface…

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Residual gravity anomalies in the Western Mediterranean shed light on complex crust
2021
Hans-Jürgen Götze, Philipp Tabelow

The data sets presented here are used for the preparations of a 3-dimensional modelling of the gravity field in the Western Mediterranean/Ligurian Sea. As part of the AlpArray initiative and…

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Resolving Meter-Scale Interwell Depositional Heterogeneities for Improved 3D Reservoir Modelling – High Resolution 3D Photogrammetry and Geophysical Outcrop Surveys of Late-Jurassic Reservoir Rocks, Saudi Arabia
2020
Ahmad Ihsan Ramdani (1), Pankaj Khanna (1), Gaurav Gariola (1), Sherif Hanafy (2) & Volker Vahrenkamp (1)

Interwell meter-scale depositional heterogeneity is a key geologic factor behind un-even fluid advance in carbonate reservoirs undergoing waterflooding and enhanced oil recovery developments. Subsurface data (seismic and well data) are…

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Review of the European Lithium resources
2021
Blandine Gourcerol, Eric Gloaguen, Romain Millot, Jérémie Melleton, Bernard Sanjuan

In the last decade, lithium has become a European strategic metal due to its extensive consumption in electromobility and green technologies. Consequently, global demand has increased substantially encouraging European interest…

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Revised and improved geological model of the Waiwera geothermal reservoir, New Zealand
2021
Andreas Grafe1,2, Thomas Kempka2,3, Michael Schneider1, Michael Kühn2,3

Following a thermal and photogrammetric outcrop mapping campaign undertaken at the Waiwera geothermal reservoir in 2019, a pre-existing 3D hydrogeological model was revised in the present study to assess the…

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Revisiting GNSS vertical velocity in the Eifel volcanic field
2021
Makan Karegar, Jürgen Kusche

Recent evidence suggests that the Eifel Volcanic Fields (EVF) make measurable contributions to the surface deformation in GPS networks, but quantitative assessments of displacement time series and their impacts on…

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Risk assessment of radioactivity in water intended for human consumption in mainland Portugal Filipa P. Domingos1,2, Alcides J. S. C. Pereira1,3
2021
Filipa P. Domingos1,2, Alcides J. S. C. Pereira1,3

The requirements for radiological protection regarding radioactive substances in water intended for human consumption are established in the Council Directive 2013/51/EURATOM of 22 October 2013. In Portugal, the Directive was…

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Rock alteration at the post-Variscan nonconformity: implications for Permo-Carboniferous surface weathering versus burial diagenesis
2021
Fei Liang1, Adrian Linsel1, Matthias Hinderer1, Jens Hornung1, Dirk Scheuvens1, Rainer Petschick2

Nonconformity surfaces are key features to understand the relations among climate, lithosphere and tectonic movements in Earth history. One of the most prominent stratigraphic surfaces in Central European is the…

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Rock slope failures along the Forkastningsfjellet coastline, Svalbard: characteristics and implications for controlling and triggering factors
2021
Dirk Kuhn1, Jewgenij Torizin1, Michael Fuchs1, Reginald Hermanns2, Tim Redfield2, Dirk Balzer1

Climate warming and the related permafrost degradation are thought to influence slope stability, landscape evolution, and the natural hazard potential in polar- and high mountain regions. In this context, we…

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Rock-hosted life through time – Integrating biosignatures of ancient and modern hydrothermal systems
2021
Florence Schubotz

Recent advances in analytical tools including more sensitive detection techniques have led to the discovery of microbial biosignatures in ultra-low biomass samples such as the oceanic lithosphere. Here, energy fluxes…

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Role of asperities on the transition from seismic to aseismic slip using an experimental fault slip system
2021
Weiwei Shu, Olivier Lengliné, Jean Schmittbuhl

Faults are common geological structures distributed at various depths within the Earth with different behaviors: from seismic to aseismic. The frictional stability of faults is linked to the properties of…

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Roots of the post-collisional Eocene magmatism in NE Turkey: Insights from ultramafic-mafic Yıldızdağ Gabbroic Intrusion
2020
Gönenç Göçmengil (1), Zekiye Karacık (2) & Namık Aysal (3)

Ultramafic-mafic cumulate rocks often situated at deep root zones of the magmatic systems when they intruded into continental crustal areas. In rare occurrences, they can also intrude at the middle…

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Sandbox – Creating and Analysing Synthetic Sediment Sections with R
2021
Michael Dietze1, Sebastian Kreutzer2,3, Margret C. Fuchs4

Geoscientific concepts and hypotheses are usually formulated based on empirical data from the field or the laboratory (induction). After translation into models they can be applied to case study scenarios…

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Scandium and Rare Earths in Major Rivers in Sweden
2021
Franziska Klimpel, Michael Bau

Scandium (Sc) is often included in the group of rare earths and yttrium (REY), but in contrast to the REY, knowledge on its behaviour in the hydrosphere is rather limited….

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Screening of environmental risks in metals supply chains, using the example of battery metals
2021
Klaus Steinmueller

As a leading industrial country, Germany has a great need for metallic raw materials, which will even increase over the next years with the intended energy and mobility transition. To…

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Sediment flux quantification across the Permian – Triassic boundary of the SE Germanic Basin: implications for climate recovery and sediment routing system analysis
2021
Domenico C. G. Ravidà1, Luca Caracciolo1, William A. Heins2, Harald Stollhofen1

of ancient sediment routing systems (SRS) and quantifying the role of external forcing controls. However, it is a particularly challenging task often hampered by the lack of solid paleo-climatic, paleo-tectonic…

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Sediment production in the Coastal Cordillera of Chile from detrital apatite geochemistry and thermochronology
2021
Andrea Madella, Christoph Glotzbach, Todd A. Ehlers

We study spatial patterns of sediment production in two catchments of the Coastal Cordillera (Chile) situated in semi-arid and mediterranean bioclimates. To do so, we measure bedrock and detrital apatite…

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Sediment production under semi-arid climatic conditions using heavy mineral and petrographical data – a case study from the recent Kunene river system, northern Namibia.
2021
Jonas Kraus, Ali Abbas Wajid, Laura Stutenbecker, Matthias Hinderer

Provenance techniques are widely applied in resolving the origin of ancient sediment successions. Petrographic signatures, however, are controlled by a complex interplay of rock type, weathering mode as well as…

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Sedimentology of the Bromacker (Thuringian Forest Basin, Germany; early Permian): Classification of sedimentary structures
2021
Frank Scholze

The Thuringian Forest Basin (southern Thuringia, central Germany) is composed of volcanic and sedimentary rocks belonging to the Gehren Subgroup and the Rotliegend Group of late Carboniferous–early Permian age. The…

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Seismic Interpretation of a deltaic-fluviatil system within the Bückeberg-Formation (Berriasian, Lower Cretaceous, Lower Saxony Basin)
2021
Matthias Warnecke, Gesa Kuhlmann

As part of the geothermal project GeneSys, the Federal Institute for Geosciences and Natural Resources, drilled the Groß Buchholz Gt1 geothermal well. At a depth of approx. 1,100 – 1,330m…

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Seismic Monitoring of DeepStor: Using low-cost sensors for ambient noise correlation methods and Citizen Science
2021
Johannes Käufl, Eva Schill, Thomas Kohl

DeepStor is an experimental facility with the goal to investigate High Temperature Aquifer Thermal Energy Storage (HT-ATES) systems at KIT Campus North. The operational seismic monitoring of DeepStor includes a…

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Self-potential and electromagnetic radiation monitoring of hydraulic fracturing experiments at the Äspö hard rock laboratory (Sweden)
2021
Nadine Haaf, Eva Schill

At the Äspö hard rock underground laboratory in Sweden, six in situ hydraulic fracturing experiments took place at 410 m depth. A multistage hydraulic fracturing approach is tested with a…

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Sending scientists into classrooms: The online platform “Forschungsbörse” linking schools with active research scientists
2020
Jörg Geldmacher (1), Sylke Hlawatsch (2) & Franziska Neumann (3)

The online platform www.forschungsboerse.de was launched in 2010 by the German Federal Ministry of Education and Research as part of the “Science Year” as an instrument for science communication and…

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Sensor fusion – An new approach towards a digital twin in geoscience and post-mining
2021
Marcin Pawlik1, Maik Gellendin2, Tobias Rudolph1

Geomonitoring of mining processes is a very current topic. Geomonitoring uses modern surface and subsurface methods observing the Earth’s surface. “Digital Twin” is a research project whose main goal is…

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Sequence stratigraphy of the Moodies Group (3.2 Ga), Barberton Greenstone Belt, South Africa
2021
Deon J. Janse van Rensburg, Christoph Heubeck, Sebastian Reimann

The Moodies Group (~3.2 Ga) of the Barberton Greenstone Belt is one of the oldest and best-preserved shallow-water siliciclastic sequences. It also harbors one of the largest occurrences of Paleoarchean…

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Shallow-marine carbonate cementation in Holocene segments of the calcifying green alga Halimeda
2021
Thomas Mann1,2, André Wizemann1,3, Marleen Stuhr1,4,5, Yannis Kappelamann1,6, Alexander Janßen1,6, Jamaluddin Jompa7, Hildegard Westphal1,6

Early-diagenetic cementation of tropical carbonates results from the combination of numerous physico-chemical and biological processes. In the marine phreatic environment it represents an essential mechanism for the development and stabilization…

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Shaping responsible future experts: the need for integrating Geoethics in Geoscience university education
2021
Dominic Hildebrandt1,2

Geoscientific know-how is essential to tackle pressing challenges: climate change, geohazards, energy and raw material supply. However, technical expertise alone – without considering societal dimensions – will not be sufficient…

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Short-term terrestrial climate variability through MIS 3 and Termination 1
2021
Daniel Veres1,2

Marine Isotope Stage (MIS) 3 represents a critical interval for understading the response of terretrial environments to rapid climate change driven by orbital focring. As the primary constituent of loess…

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Si isotope thermometry in silicified carbonate
2021
Michael Tatzel1,2, Marcus Oelze2, Moritz Liesegang3, Maria Stuff4, Michael Wiedenbeck2

Cherts, including silicified carbonates, are one of the most detailed and alteration resistant archives of near-surface environments. Yet, the information disclosed in form of stable isotope ratios of Si and…

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Significance of epidosite alteration for seafloor sulphide deposits and for fluid fluxes through the oceanic crust
2021
Larryn William Diamond, Samuel Weber, Peter Alt-Epping, Alannah Brett

Epidosites are a prominent type of subseafloor hydrothermal alteration of basalts in ophiolites and Archean greenstone belts, showing an end-member mineral assemblage of epidote + quartz + titanite + Fe-oxide….

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Similarities of the Scotia and Caribbean Plates: Implications for a common plate tectonic history?!
2021
Christian Burmeister1, Paul Wintersteller2, Martin Meschede1

The active volcanic arcs of the Scotia- and Caribbean Plate are two prominent features along the otherwise passive margins of the Atlantic Ocean, where subduction of oceanic crust is verifiable….

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Simulation of flow through a single fracture calibrated with air permeameter measurements Marco Fuchs, Sina Hale, Gabriel C. Rau, Kathrin Menberg, Philipp Blum
2021
Marco Fuchs, Sina Hale, Gabriel C. Rau, Kathrin Menberg, Philipp Blum

Determining fluid flow through natural fractures is an important task in many geoscience-related fields, such as geothermics. In order to estimate crucial parameters of single fractures controlling the flow and…

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Simulation study of hydrate formation from dissolved methane in the LArge-scale Reservoir Simulator (LARS)
2021
Zhen Li1,2, Thomas Kempka1,2, Erik Spangenberg1, Judith Schicks1,2

Hydrate formation from dissolved methane in saline solutions is a hydrochemical process, resulting in the accumulation of gas hydrates in sedimentary strata under the seafloor or overlain by permafrost regions….

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Simulations with numerical model PCSiWaPro® for the infiltration system of treated wastewater on Sardin village, Syria
2021
Abdulnaser Aldarir, Peter-Wolfgang Graeber, Ian Desmond Gwiadowski, Rene Blankenburg

The improvement of groundwater availability in arid areas by infiltration of treated wastewater will play an important role in the next few years. Small wastewater plant is a good alternative…

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Single borehole dilution tests using a permeable injection bag and a novel point-injection probe for the hydraulic characterization of karst aquifers
2021
Nikolai Fahrmeier, Nadine Goeppert, Nico Goldscheider

Single borehole dilution tests are a method for characterizing groundwater monitoring wells or boreholes and can either be conducted as uniform injection throughout the entire saturated length or as point…

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Slip tendency analysis for 60 3D faults in Germany and adjacent areas
2021
Luisa Röckel1, Steffen Ahlers2, Birgit Müller1, Karsten Reiter2, Oliver Heidbach3, Tobias Hergert2, Andreas Henk2, Frank Schilling1

Tectonic faults are of great importance for many underground applications such as hydrocarbon extraction, geothermal operations or nuclear waste repositories. In particular, the fault reactivation potential is crucial in regards…

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Social licence to operate in the applied geo- and engineering projects
2021
Tobias Rudolph1, Jörg Benndorf2, Peter Goerke-Mallet1

The social license to operate of projects in applied geosciences and engineering has been an issue since the days of Georg Agricola. Its importance for the reputation of companies has…

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Soil gas monitoring for identifying potential ground movements and earthquakes in the frame of mine flooding – Requirements, methods and developments
2021
Olaf Ukelis, Roman Zorn, Detlev Rettenmaier

Soil gas surveys (e.g. 222Rn, CO2, O2 etc.) are very well known in diverse backgrounds such as the detection of geological faults, prediction of earthquakes or monitoring of gas contamination…

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Solid Earth applications of global gravity data: from submarines to satellites
2021
Bart Root

Prof. Vening Meinesz opened up the oceans for high precision gravimetric observations. Today, his submarine adventures are an inspiration to my science and education in gravimetric research. We will follow…

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Source of metals in ultramafic-hosted VMS deposits: insight from the Troodos ophiolite and ODP Hole 735B
2021
Clifford Patten1, Malte Junge2, Alexandre Peillod1

Volcanogenic massive sulfide (VMS) deposits associated with mafic-ultramafic rocks show strong structural control and are located at or in the vicinity of low angle detachment faults such as oceanic core…

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Source-normalized α-dose: discrimination of first- and multi-cycle detrital zircon
2021
Maximilian Dröllner, Milo Barham, Christopher L. Kirkland

Detrital zircon (DZ) U-Pb geochronology is widely applied in the geosciences to address a very wide range of questions. However, zircon is refractory and discrimination of first- versus multi-cycle origin…

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Southeastern Atlantic deep-sea warmth across two early Eocene transient global warming events
2020
Tobias Agterhuis, Martin Ziegler, Lucas J. Lourens,

Paleoclimate Biogeology, Earth Sciences Department, Utrecht University, The Netherlands brbr br br The early Eocene (56–48 Ma) can provide important constraints on the near-future warm climate state (Zachos et al.,…

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SpannEnD – The crustal stress state of Germany
2021
Steffen Ahlers1, Andreas Henk1, Tobias Hergert1, Karsten Reiter1, Birgit Müller2, Luisa Röckel2, Oliver Heidbach3, Sophia Morawietz3, Magdalena Scheck-Wenderoth3, Denis Anikiev3

Information about the recent stress state of the upper crust is important for understanding tectonic processes and for the use of the underground in general. A currently important topic, the…

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Spatial and temporal patterns of rare earth elements in the seaweed Saccarina latissima along the Norwegian coast
2021
Stefania Piarulli1, Tomasz Ciesielski2, Silje Forbord3, Achilleas Zevros2, Bjørn Henrik Hansen1, Bjørn Munro Jenssen2, Julia Farkas1

Rising rare earth elements (comprising the 15 lanthanoids plus yttrium (REY)) processing and use can lead to increased anthropogenic REY release into the environment, representing a potential environmental concern. Seaweeds…

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Spatial variations in submarine caldera-hosted hydrothermal systems: Insights from sulfide chemistry, Niuatahi caldera, Tonga rear-arc
2021
Jan J. Falkenberg1, Manuel Keith1, Karsten M. Haase1, Reiner Klemd1, Harald Strauss2, Christian Peters2, Jonguk Kim3

Submarine “black smoker” systems and their associated seafloor massive sulfides (SMS) may represent economic resources for future generations. However, the processes leading to spatial variations in the mineralogical and chemical…

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Starting the recycling engine: how far back in time can we fingerprint crust in Earth’s mantle?
2021
Sebastian Tappe1, Katie A. Smart2, Richard A. Stern3

The nature of the tectonic processes that shaped the early Earth remain unresolved, hampered not only by the sparse Early Archaean crustal rock record, but also by the dearth of…

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Storage in the energy transition: A regulator perspective
2021
Wouter van der Zee

The underground storage will play an important role in the energy transition, both for energy storage as for CCS. Current storage activities in the Netherlands are for natural gas, diesel…

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Stormwater harvesting in ephemeral streams: how to effectively bypass clogging layers and thick vadose zones
2021
Jose David Henao Casas1,2, Fritz Kalwa3, Marc Walther3,4, Randolf Rausch5

In drylands, stormwater is often collected in surface basins and subsequently stored in shallow aquifers via infiltration to cope with water scarcity. These groundwater recharge schemes are often accompanied by…

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Stratigraphic gaps and durations of the carbon isotope events during the Middle-Late Ordovician in Yichang, South China
2020
Chuan zhen Ren (1,2), Qiang Fang (1,2) & Huaichun Wu (1,2)

The Middle-Late Ordovician transition is one of the most important periods of the environmental changes and biotic turnovers throughout the earth’s history. Here, we used magnetic susceptibility as the paleoclimate…

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Stromatolitic microorganisms in and on top of fluid-escape structures of the 3.2 Ga Moodies Group
2021
Sebastian Reimann1, Christoph Heubeck1, Martin Homann2, Deon Johannes Janse van Rensburg1, Michael Wiedenbeck3

The global record of early life is only poorly preserved, but has an ark in the 3.2 Ga Moodies Group of the Barberton Greenstone Belt, South Africa and Eswatini. It…

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Structural and Geophysical Characterisation of the Crystalline Basement in the Northern Upper Rhine Graben
2021
Matthis Frey1, Claire Bossennec1, Lukas Seib1, Kristian Bär1, Ingo Sass1,2

In the northern Upper Rhine Graben (URG), the crystalline basement constitutes an attractive target for deep geothermal exploitation due to the favourable reservoir temperatures and abundance of natural fractures and…

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Structural modelling of Agbada (Tertiary) sandstone reservoirs in “Atled Creek”, Onshore Niger Delta, Nigeria
2021
Olajide Jonathan Adamolekun1, Benjamin Busch1, Idongesit Akwaowoh2, Michael P. Suess3, Christoph Hilgers1

The distribution of rocks and rock properties is an important part of an overall strategy for reservoir development, placement of new wells and prediction of future production. It also provides…

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Structure and density configuration of Germany’s subsurface: 3-D-Deutschland, an updated three-dimensional lithospheric-scale model
2021
Denis Anikiev1, Judith Bott1, Mauro Cacace1, Hans-Jürgen Götze2, Magdalena Scheck-Wenderoth1,3

With this study we revise and improve the three-dimensional lithospheric-scale structural and density model of Germany (3-D-D). Major shortcomings of this model resulted from joining three regional 3-D models that…

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Studying glacial/interglacial cycles from downhole logging data: an application to the ICDP drilling project Lake Junín, Peru
2020
Simona Pierdominici (1), Christian Zeeden (2), Jochem Kück (1), Donald Rodbell (3) & Marc Abbott (4)

Can the history of the lake records covering the glacial-interglacial cycles be reconstructed from downhole logging data without the high-resolution data derived from core analysis? To answer this question, we…

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Subduction Dynamics and Rheology Control on Forearc and Backarc Subsidence: Numerical Models and Observations from the Mediterranean
2021
Attila Balazs1, Claudio Faccenna2, Taras Gerya1, Kosuke Ueda1, Francesca Funiciello2

The dynamics of subduction zones is linked to the rise and demise of forearc and backarc sedimentary basins in the overriding plate. Subsidence and uplift rates of these distinct basins…

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Subduction initiation and arc evolution from a rear-arc perspective – A synthesis of results from IODP Exp. 351
2021
Philipp A. Brandl

Subduction is a key process for the plate tectonic cycle and is responsible for the bimodal composition of the Earth’ crust. Whereas active subduction zones can be directly observed at…

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Subsurface data availability: benchmarking data access arrangements in several Western European countries
2020
Eline Van Malderen (1) & Guido Hoetz (2)

During the current energy transition, understanding our deep subsurface appears more important than ever. Traditional energy resources such as oil and gas might remain dominant in coming years but are…

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Suppression of Wind Turbine Noise from Seismological Data
2021
Janis Heuel, Wolfgang Friederich

Seismologist noticed are worsening of station quality after the installation of wind turbines (WTs) close to seismological stations. Since WTs and seismological stations are installed mostly in areas with low…

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Sustainability in energy storages – How modern geoscience concepts can improve underground storage monitoring
2021
Benjamin Haske, Tobias Rudolph, Bodo Bernsdorf

Re-using of large-volume salt caverns for the intermediate storage of liquid and gaseous energy carriers is an indispensable step on the way to a sustainable energy economy. Continuous development of…

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Sustainable Earth from processes to resources
2021
Christoph Hilgers, Jürgen Grötsch (eds)

DGGV e.V. Jahrestagung, 19. bis 24. September 2021 in Karlsruhe Vorwort Die Geowissenschaften erforschen die Prozesse der Erde und gewinnen Georessourcen zum Erhalt unserer Lebensgrundlagen und zur Gestaltung unseres Lebensraums.Dies…

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Sustainable mining of sand and gravel in the UNESCO Global Geopark Harz. Braunschweiger Land. Ostfalen
2021
Claus Evers2, Henning Zellmer1

The company Evers und Co GmbH operates two gravel plants in Süpplingen and Uhry / Helmstedt district and thus produces various sands and gravel, topsoil, mineral mixtures and concrete aggregates,…

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Sustainable use of geoheritage sites and areas across geotrails in UNESCO Global Geoparks and of related elements at Messel Pit World Heritage Site, Germany
2020
Marie-Luise Frey

The sustainable use of geological resources is a management task, demand and challenge. When the European Geoparks Network was founded in 2000, a new view fell on geosites, geotopes, former…

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Systematic analysis of precision, long-term stability and data processing of MC-ICP-MS 230Th/U-dating of secondary carbonates
2021
Inga Kristina Kerber, Fabian Kontor, Jennifer Arps, René Eichstädter, Sophie Warken, Norbert Frank

MC-ICP-MS has become the clearly dominant technology in 230Th/U-dating over the last 20 years. The ongoing increase in measurement performance allows for ε-precision by now (Andersen et al., 2004; Cheng…

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Technological Innovations for more Efficient Mineral Resource Exploration
2020
Torsten Gorka

Saving exploration time, improving cost efficiency, and achieving higher levels of social and environmental acceptance: these are the key aims of the development of novel exploration methods investigated by the…

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Tectonic accretion controls erosional cyclicity in the Himalaya
2021
Dirk Scherler1,2, Sanjay Kumar Mandal1,3, Hella Wittmann1

The evolution of Earth’s climate over geological timescales is linked to surface erosion by weathering of silicate minerals and burial of organic carbon. However, methodological difficulties in reconstructing erosion rates…

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Tectonic and environmental perturbations at the Permian-Triassic boundary: insights from the Blue Nile River Basin in central Ethiopia
2021
Maryam Mansouri1, Matthias Hinderer1, Laura Stutenbecker1, Guido Meinhold2, Enkurie L. Dawit3, Jasper Berndt4, Robert Bussert5

The Blue Nile River Basin contains a thick fluvio-lacustrine sediment succession of Permian to the Jurassic age. Its evolution is linked to extensional tectonics during the break-up of Pangea in…

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Tectonic and environmental perturbations at the Permian-Triassic boundary: insights from the Blue Nile River Basin in central Ethiopia
2021
Maryam Mansouri1, Matthias Hinderer1, Laura Stutenbecker1, Guido Meinhold2, Enkurie L. Dawit3, Jasper Berndt4, Robert Bussert5

The Blue Nile River Basin contains a thick fluvio-lacustrine sediment succession of Permian to Jurassic age. Its evolution is linked to extensional tectonics during break-up of Pangea in the aftermath…

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Tectonic controls on the geomorphic evolution of alluvial fans adjacent to the Kouhbanan fault in Iran
2020
Shirin Salari(1), Reza Derakhshani (1,2), Ahmad Abbasnejad (1), Shahram Shafieibafti (1), Jafar Rahnamarad (3) & Ali Mehrabi (4)

Kouhbanan fault is known as one of the faults that caused many seismic events in Iran. The aim of this study was to investigate the role of tectonics in the…

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Temperature and frequency-dependent magnetic susceptibility parameters: improving the reliability of archaeointensity in burnt clay ceramics
2021
Arnaldo Hernández Cardona1, Luis M. Alva Valdivia2

Analysis of magnetic mineralogy alteration parameters has been used to understand mineralogy transformation at sample heating. While many studies used the reversibility of low-field magnetic susceptibility vs. temperature κ(T) curves…

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Ternary porosity systems: New perspectives for Buntsandstein geothermal reservoirs in the Upper Rhine Graben, SW Germany
2021
Ernst Kiefer, Birgit Müller, Frank Schilling

The clastic Lower Triassic Buntsandstein Formation in the Upper Rhine Graben of SW Germany and NE France has been identified as an attractive geothermal reservoir due to its fracture density…

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Testing the Roksolany LPS for astronomical climate forcing via spectral analysis and its correlation with the Middle Danube Basin loess records
2021
Christian Laag1, Dmytro Hlavatskyi2, Vladimir Bakhmutov2

Loess-paleosol sequences (LPSs) are valuable paleoclimate archives capable to record Pleistocene climate changes. Since the past decades, LPSs of the famous Chinese Loess Plateau and the Danube Basins were investigated…

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Tetravalent uranium mobilization by complexation or oxidation and associated U isotope fractionation
2021
Yvonne Roebbert1, Chris Daniel Rosendahl1, Ashley Brown2, Axel Schippers3, Rizlan Bernier-Latmani2, Stefan Weyer1

Uranium (U) isotopes are suggested to monitor the success of (bio)remediation relying on the reduction of soluble and mobile U(VI) to less soluble U(IV)1. However, the subsurface stability of U(IV),…

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The antiquity of lanthanide tetrad effect and super-chondritic Y/Ho ratio in seawater
2021
David M. Ernst, Michael Bau

Pure and pristine Archaean and Palaeoproterozoic banded iron formations (BIFs) are excellent marine geochemical archives, especially of original rare earths and yttrium (REY) characteristics. As recently demonstrated for the Mt.Ruker…

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The Australian AuScope Virtual Research Environments (AVRE): a Flexible, Service-Oriented Geoscience Platform to Empower Researchers for the Global Challenges of Today and Those of the Future
2021
Jens Klump1, Tim Rawling2, Carsten Friedrich3, Ulrich Engelke3, Vincent Fazio1, Lesley Wyborn4

AuScope is Australia’s National Geoscience Research Infrastructure Program and seeks to provide a world-class research physical and digital infrastructure to help tackle Australia’s key geoscience challenges. Launched in 2007, AuScope’s…

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The carbonatites of South Morocco: Unusual occurrences and associated REE-Nb-Ta-Fe mineralization
2021
Rachid Benaouda1, Dennis Kraemer1, Maria Sitnikova2, Michael Bau1

The Oulad Dlim massif in the southernmost part of Morocco hosts several carbonatite bodies of different ages. The older carbonatite (1.85 Ga) occurs in the eastern Oulad Dlim massif in…

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The cause for HFSE enrichment in foidolite-carbonatite complexes
2021
Dominik Gudelius1, Michael W. Marks2, Jochen Kolb1, Gregor Markl2, Benjamin F. Walter1

The Gardiner (E-Greenland) and Kovdor (Russia) alkaline complexes display a similar succession of rock types comprising dunites-pyroxenites, ijolite series rocks, melilitolites and carbonatites. Although similar melanephelinitic parental magmas are suggested…

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The changing role of Petroleum Geoscietists and Engineers in the Energy Transition
2020
Eilard Hoogerduijn Strating

The transition towards a zero carbon footprint energy system will greatly impact the energy mix we will use. Globally, a significant increase is expected in the contribution of electrical power…

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The Chico Sill Complex, Northeast New Mexico: A case for late-stage phonolite-carbonatite melt immiscibility
2021
Lee S. Potter

The Chico Sill Complex (Northeast New Mexico) is the result of magmatic episodes from ~37 Ma to 20 Ma and produced a diverse and compositionally discontinuous suite of mostly intrusive…

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The closure of the Neotethys in two episodes: first. as a result of Jurassic to Early Cretaceous obduction and second, as a result of Early Palaeocene collision; a comparison of surface geology and tomography (Central Internal Hellenides, Greece)
Rudolph Scherreiks (1) & Camille BouDagher-Fadel (2)

This contribution concerns Neotethys palaeogeography in the Central Internal Hellenides. Neotethys oceanic crust is represented in the Vardar zone of the Hellenides by the ophiolites of the Almopias sub-zone. Contrary…

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The compilation of the new Alpine gravity maps – from the work of the AlpArray Gravity Research Group
2021
Pavol Zahorec1, Juraj Papco2, Roman Pasteka3, Miroslav Bielik3, Sylvain Bonvalot4, Carla Braitenberg5, Jörg Ebbing6, Gerald Gabriel7,8, Andrej Gosar9, Adam Grand3, Hans-Jürgen Götze6, György Hetényi10, Nils Holzrichter6, Edi Kissling11, Urs Marti12, Bruno Meurers13, Jan Mrlina14, Ema Nogová3, Alberto Pastorutti5, Corinne Salaun15, Matteo Scarponi10, Josef Sebera6, Lucia Seoane4, Peter Skiba7, Eszter Szűcs16, Matej Varga17

The international networking initiative AlpArray Gravity Research Group (AAGRG) focused on the compiling homogeneous surface-based gravity datasets across the Alps and adjacent areas, on creating digital data sets for Bouguer…

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The correlation of radon in different types of buildings and radon prone areas of Cluj-Napoca, Romania
2021
István Mihály Pap

It is a well-known fact that the city of Cluj-Napoca in Romania has a diverse geological stratification, based on the geological data and studies performed on the soil by geologists….

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The data publication chain of the EPOS Multi-scale Laboratories
2021
Geertje ter Maat, the MSL Team

EPOS (the European Plate Observing System) is a pan-European e-infrastructure framework with the goal of improving and facilitating the access, use, and re-use of Solid Earth science data. The EPOS…

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The deeper subsurface of Lower Saxony – Developing a generalised 3D geological model from heterogeneous and inconsistent data
2021
Sabine Sattler, Marcus Helms, Cornelia Wangenheim, Jennifer Ziesch

The creation and application of 3D geological models has become increasingly important within the geological surveys in recent years. In the joint project TUNB (Tieferer Untergrund Norddeutsches Becken – Deeper…

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The Drosendorf Unit in the Austrian part of the Bohemian Massif: Does it host the oldest rock fragments of Variscan Europe?
2021
Martin Lindner1, Etienne Skrzypek2, Christoph Hauzenberger2, Dominik Hauser3, Sabina Steiner3, Fritz Finger2,3

Remnants of pre-Cadomian rocks are scarce in the Variscides including the Bohemian Massif. In the latter, numerous Variscan metamorphosed Mesoproterozoic and Early Neoproterozoic sediments and granitoids are contained in the…

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The educational role of historical mining sights for sustainable use of geological ressources – examples from the UNESCO Global Geopark Bergstraße-Odenwald
2021
Jochen Babist, Jutta Weber

The educational role of historical mining sights for sustainable use of geological ressources – examples from the UNESCO Global Geopark Bergstraße-Odenwald In a Geopark, historical mining sights can act as…

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The effect of Co substitution and sample preparation on the Raman spectra of pyrite
2021
Khulan Berkh, Dieter Rammlmair

Effect of Co substitution in pyrite was investigated using a Raman microprobe. Textural appearance of Co-bearing pyrite was visualized by mapping method. The revealed Raman map tightly correlates with a…

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The Eocene-Oligocene Transition in intra-continental basins: A perspective from the Upper Rhine Graben
2021
Emile Simon1, Hendrik Vogel2, Mathieu Schuster1

The Eocene-Oligocene Transition (EOT) marks a turning point from the Eocene greenhouse paleoclimate to near-modern icehouse conditions. This ~790 kyr long interval is associated with major shifts in geochemical and…

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The European continental crust through detrital zircons from modern rivers: biasing effects in the detrital zircon record
2021
Paula Castillo1, Heinrich Bahlburg1, Rodrigo Fernández2, Mark Fanning3, Jasper Berndt4

We present U-Pb, Lu-Hf, and O isotopic data, as well as size-shape data for approximately 3700 detrital zircons from 15 European rivers. In combination with geomorphological information for each river…

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The EXCITE-network: providing access to leading-edge electron and X-ray microscopy facilities for geo-materials research
2021
Oliver Plümper1, Veerle Cnudde1,2, Geertje ter Maat1, Sylvia Walter1, Richard Wessels1, the EXCITE network1

Understanding earth materials is critical to creating a sustainable, carbon-neutral society due to their involvement in many vital processes. Earth materials control the feasibility of subsurface energy storage, geothermal energy…

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The family of battery metals found in European seabed mineral deposits: The MINDeSEA perspective
2021
Javier Gonzalez1, Teresa Medialdea1, Henrik Schiellerup2, Irene Zananiri3, Pedro Ferreira4, Luis Somoza1, Xavier Monteys5, Trevor Alcorn5, Egidio Marino1, Ana Lobato1, Thomas Kuhn6, Johan Nyberg7, Vitor Magalhaes8, Rosario Lunar9, Boris Malyuk10, James Hein11, Georgy Cherkashov12

Covering 15,000,000 km2, the pan-European seas represent a promising new frontier for the exploration of mineral resources. The GeoERA-MINDeSEA consortium, a cooperative network of 12 Geological Surveys and Marine Institutes,…

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The fate of crustal xenoliths in carbonatite dykes of the Gross Brukkaros, Namibia
2021
Rebecca Ruwe1, R. Johannes Giebel2,3, Benjamin F. Walter1

The Gross Brukkaros (Namibia) reflects a broad dome structure showing a crater-shaped depression with numerous peripheral beforsitic carbonatite dykes. These dykes frequently contain an extreme load of basement (Nama-group) xenoliths…

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The geological heritage as a tool for education and action for the climate change: Understanding the consequences by studying the Petrified Forest of Lesvos
2021
Konstantina Bentana, Nikolaos Zouros, Ilias Valiakos

The geological heritage provides a particularly effective pedagogical tool to engage school students with climate change through on site exploration in UNESCO Global Geoparks. Geological data provides invaluable opportunities to…

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The German Site Selection Procedure – Results presented in the Interim Report by the Bundesgesellschaft für Endlagerung mbH
2021
Nadine Schöner, Julia Rienäcker-Burschil, Matthias Emanuel Bauer

In 2013, the German Site Selection Act (StandAG) restarted the search for a site with the best possible safety for a geological repository for the high-level radioactive waste produced in…

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The ICDP Oman Drilling Project – Implications from drill core GT1 on magmatic processes beneath fast-spreading mid-ocean ridges
2021
Dominik Mock1,2, David Axford Neave3, Samuel Müller4, Dieter Garbe-Schönberg4, Benoit Ildefonse2, Jürgen Koepke1, Oman Drilling Project Science Team5

A key aim of the ICDP Oman Drilling Project is to constrain magmatic processes beneath fast-spreading mid-ocean ridges. Several drill cores from the Samail ophiolite (Oman), which is regarded as…

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The impact of increasing temperature on microbial lipid distributions in the Nankai Trough subduction zone, IODP Exp. 370
2021
Florence Schubotz1, Inga Hölscher1, Julius Sebastian Lipp1, Yuki Morono2, Fumio Inagaki2,3, Verena B. Heuer1, Kai-Uwe Hinrichs1

Site C0023 in the Nankai Through subduction zone was established in 2016 to investigate the temperature limits of deep subsurface life. Here, we report on the detection of intact polar…

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The influence of sea-level changes on Eocene coastal wetlands during greenhouse conditions at the southern edge of the proto-North Sea in Northern Germany
2021
Olaf Klaus Lenz, Volker Wilde, Walter Riegel

The sedimentary succession of the Helmstedt Lignite Mining District at Schöningen in northern Germany includes the upper Paleocene to lower Eocene Schöningen Formation and the middle Eocene Helmstedt Formation. It…

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The INSIDE project: Investigating the impact of geothermal exploitation in the Munich area – The induced seismicity perspective.
2021
Jérôme Azzola1, Emmanuel Gaucher1, Felix Bögelspacher2, Ralph Baasch3, Bernhard Betzl4, Ilka Schultz5

Scientific research is carried out in the framework of the INSIDE project (supported by the German Federal Ministry for Economic Affairs and Energy, BMWi) to assess the impact of deep…

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The Kieshöhe carbonatites in SW-Namibia – the role of silicatic xenoliths for REE exploration
2021
Benjamin Florian Walter1, R. Johannes Giebel2, Alan Marlow3, Michael Marks4, Gregor Markl4, Jochen Kolb1

Exploration of carbonatite-associated REE-deposits is challenging due to heterogeneous ore distribution and variable and often complex ore mineralogy. The Kieshöhe carbonatite in SW Namibia represents a subvolcanic occurrence hosting dolomite,…

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The Kohlenkalk of the Rhenohercynian Basin: a hydrothermal reservoir for North Rhine-Westphalia and North-West Europe
2020
Martin Arndt, Tobias Fritschle, Martin Salamon & Anna Thiel

The transnational EU-Interreg-funded “Roll-out of Deep Geothermal Energy in North-West Europe” (DGE-ROLLOUT) project aims to reduce CO2 emissions following a multi-disciplinary geoscientific approach, and promotes the use of hydrothermal energy…

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The mandibular morphology of the Middle Pleistocene brown bear mandible from Postes cave (Spain) within the European Ursus arctos (LINNAEUS, 1758) morphological variation
2020
Mónica Villalba de Alvarado (1,2), Asier Gómez Olivencia (3,4,1), Hipólito Collado Giraldo (5), Juan Luis Arsuaga Ferreras (1,6) & Anneke van Heteren (7,8,9);

Brown bears (Ursus arctos) originated in Asia and diverged from the spelaeoid line in the late early Pleistocene, but they do not appear in the European fossil record until half…

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The Marmorera-Cotschen hydrothermal system (Platta nappe, Switzerland): A Jurassic analogue to present-day oceanic ultramafic-hosted mineralized systems
2021
Rémi Coltat1, Philippe Boulvais2, Yannick Branquet2,3, Ewan Pelleter4, Gianreto Manatschal5

Mid-Oceanic ridges are places of intense fluid-rock interactions. At (ultra)slow-spreading ridges where mantle rocks are exhumed along detachment faults, this notably leads to the formation of mineralized systems. They commonly…

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The most ancient platanistid: An insight into the early evolutionary history of the dolphin group
2020
Catalina Sanchez-Posada (1,2), Michael Krings (2,1) & Gertrud Rössner (2,1)

The fossil record of Platanistidae (Indian river dolphins and extinct partially marine relatives, Early Miocene to today) is suggestive of an early radiation of the group reflected in the diversification…

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The Museum Mineralogia München (SNSB), a geoscientific place of education
2021
Melanie Kaliwoda, Malte Junge, Felix Hentschel, Wolfgang W. Schmahl

The Museum Mineralogia München represents the museum window of the Mineralogical State Collection Munich (SNSB). It shows constantly reprocessed geoscientific topics through diverse special and permanent exhibitions. In addition, there…

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The Paleozoic supercontinent cycle and regional tectonics
2021
Uwe Kroner1, Tobias Stephan2, Rolf L. Romer3

Ancient plate boundary processes define the first order architecture of consolidated continental crust. Therefore, regional tectonic features allow for the reconstruction of plate tectonic processes. Here we explain the Paleozoic…

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The permeability of granite deformed in the brittle regime to large strains: Implications for the permeability of fractured geothermal reservoirs
2021
Michael Heap1,2, Hugo Duwiquet3,4, Luke Griffiths5, Laurent Guillou-Frottier3,4, Patrick Baud1, Marie Violay6

Efficient fluid flow and circulation are important for an economically viable geothermal reservoir. One type of underexplored reservoir for high-temperature geothermal exploitation is a crustal fault zone, where hot fluids…

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The Pleistocene sediments of the Palaeoatbara in eastern Sudan as an archive for the evolution of the Nile river system
2021
Robert Bussert1, Mosab Mohammednoor1,2, Faysal Bibi2, Anne Delagnes3, Sumiko Tsukamoto4, Omar Bedri5, Brian Kraatz6, Ignacio Lazagabaster2, Johannes Müller2, Khalaf Salih7, Ali Eisawi7

Geological evidence and geodynamic modelling suggest that the Nile river system has been largely stable since its origins ~30 Ma. The Nile could have provided a long-term migration route for…

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The potential of detrital garnet in UHP research as exemplified by the central Saxonian Erzgebirge
2020
Jan Schönig (1), Hilmar von Eynatten (1), Guido Meinhold (1,2) & Keno Lünsdorf (1)

Understanding the occurrence, extent, and lithological variability of UHP metamorphic domains is fundamental to plate tectonics and its evolution through geologic time. In the central Saxonian Erzgebirge (Germany), the highest…

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The ROBOMINERS approach to mining small and difficult to access deposits
2020
Luís Lopes

The ROBOMINERS project, funded under the EU Horizon 2020 programme, Grant Agreement no. 820971, is developing an innovative solution for the exploitation of small and difficult to access deposits in…

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The Saxothuringian “Wrench-and-Thrust Zone” – the connecting link between the Peri-Gondwana shelf and the Variscan orogen.
2021
Franz Müller, Uwe Kroner

The Saxothuringian Zone of the Central European Variscides preserves the sedimentary record of the post-Cadomian shelf and an Early Carboniferous synorogenic basin. Thus, this area reflects the transition from a…

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The Segmented Zambezi Sedimentary System from Source to Sink 1. Sand Petrology and Heavy Minerals
2021
Eduardo Garzanti1, Guido Pastore1, Alberto Resentini1, Giovanni Vezzoli1, Pieter Vermeesch2, Lindani Ncube3, Helena Johanna Van Niekerk3, Gwenael Jouet4, Massimo Dall'Asta5

The Zambezi River rises at the center of southern Africa, flows across the low-relief Kalahari Plateau, meets Karoo basalt, plunges into Victoria Falls, follows along Karoo rifts, and pierces through…

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The SpannEnD project – Towards a robust prediction of the 3D stress state in the upper crust of Germany
2021
Karsten Reiter1, Steffen Ahlers1, Sophia Morawietz2, Luisa Röckel3, Tobias Hergert1, Andreas Henk1, Birgit Müller3, Oliver Heidbach2

The assessment of the long-term stability of geological units in the context of subsurface use is a complex topic in which various geoscientific and technical aspects play an important role….

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The spectroscopy of luminescent geological materials
2021
Ian M. Coulson

Luminescence is the non-incandescent emission of light from materials excited by an electron beam. Electron irradiation raises sample electrons to an excited state, which then emit a photon as they…

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The StraboSpot data system for geological information: An overview
2020
Basil Tikoff (1), Julie Newman (2), J Douglas Walker (3), Randy Williams (1) & Vasileios Chatzaras (4)

StraboSpot is a geologic data system that is designed to allow researchers to digitally collect, store, and share both field and laboratory data (Walker, J.D., et al., 2019, StraboSpot data…

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The Utrecht Companion to the Earth: Making the Field an Even Richer Learning Environment
2020
João P. Trabucho Alexandre, Hans de Bresser, Andrea Cuesta Cano & Yorick P. Veenma

The ultimate aim of field courses should be to enable students to work autonomously in the field. Student- and problem-centered approaches to learning in the field afford students much autonomy,…

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The value of heat interconnection pipelines in the use of deep geothermal energy
2021
Markus Loewer, Maximilian Keim, Anahi Molar-Cruz, Christopher Schifflechner

Over the past fifteen years, Bavaria has become a hotspot for deep geothermal utilization in Europe. There are now 24 plants operating in the Molasse Basin that provide climate-friendly heat,…

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The WAlps project: Casting new light on scheelite tungsten deposits in the Eastern Alps
2020
Florian Altenberger (1), Julia Weilbold (2), Johann G. Raith (1), Albert Schedl (2), Christian Auer (2), Tanja Knoll (2), Holger Paulick (2) & Hassan Neinavaie (3)

Based on considerations such as economic importance and potential challenges to supply security some mineral raw materials are considered “critical”. One prominent example is tungsten, for which supply is strongly…

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The Werra-Fulda mining district, underground extension of the CEVP-alkaline magmatic province – New insights in the magmatic evolution and its interaction with evaporitic deposits
2021
Axel Zirkler1, Ulrich A. Glasmacher2, Florian Krob2, Silvio Zeibig1, Jochen Olbert2, Istvan Dunkl3

The Werra-Fulda mining district located in Central Germany hosts a world-class deposit of sulfate bearing potash salts. The Permian (Zechstein, ca. 255 Ma) evaporite sequence was intruded by mafic melts…

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The Yarmouk basin, an essential transboundary water resource
2021
Christian Siebert1, E. Shalev2, F. Magri3, P. Möller4, E. Salameh5, T. Rödiger6

The Yarmouk River is the primary tributary to the Jordan River and a strategic transboundary freshwater resource of Syria, Jordan, and Israel. In the past decades, the Yarmouk watershed has…

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The Zagros Mountain Front Flexure in Kurdistan Region of Iraq: Structural style and Late Pleistocene-Holocene Fault Slip Rates Derived from Structural Modeling and Luminescence Dating of River Terraces
2021
Mjahid Zebari1,2, Frank Preusser3, Christoph Grützner1, Payman Navabpour1, Kamil Ustaszewski1

The Zagros Mountain Front Flexure (MFF) makes a prominent topographic and structural step along the Zagros Fold-Thrust Belt that accommodates a significant amount of shortening between the Eurasian and Arabian…

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Thermal memory of sedimentary basins: case study from the Central European Basin System
2020
Maximilian Frick (1), Mauro Cacace (1), Uwe Mikolajewicz (2) & Magdalena Scheck-Wenderoth (1,3)

This study deals with modelling the distribution of the subsurface temperature in space and the respective evolution in time in response to variations in the thermal boundary condition starting from…

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Thermo-compositional models of the West Gondwana cratons
2021
Nils-Peter Finger1,2, Mikhail K. Kaban1,3, Magdala Tesauro4,5, Walter D. Mooney6, Maik Thomas1,2

When Western Gondwana broke apart into the South American and African continents ⁓ 120 Ma ago, some of its cratons were broken apart as well. Following the isopycnic hypothesis, their…

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Thermobarometry at extreme conditions – what can possibly go wrong? An example
2021
Thorsten Joachim Nagel1, Kathrin Fassmer2

We present eclogites and garnet pyroxenites from Danmarkshavn (Greenlandic Caledonides). So far, one ultra-high pressure (UHP) location has been described from NE Greenland. There, thermobarometry yielded conditions of 972 ºC/36…

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Think or Sink: unravelling anthropogenic causes of subsidence with a hybrid AI approach
2020
Thibault G.G. Candela (1), Joana C. Esteves Martins (2), Peter A. Fokker (1), Aris Lourens (3), Willem Dabekaussen (3), Wilfred F.J. Visser (4), Erik A.F. Langius (5), Madelon S. Molhoek (6), Matthias S. Fath (6), Andrei Bocin-Dumitriu (3) & Kay Koster (3)

The Netherlands is subject to anthropogenic and natural subsidence with rates which are an order of magnitude higher than sea-level rise. Because one-third of the Netherlands lies below mean sea…

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THM Experiment for the Investigation of Freeze-Thaw Processes in Unconsolidated Rock and Geotechnical Grouts
2020
Jan Christopher Hesse (1,2), Jan-Henrik Kupfernagel (3), Markus Schedel (1,2), Bastian Welsch (1,2), Lutz Müller (3) & Ingo Sass (1,2)

Freezing and thawing in the subsurface is often associated with a complex technical handling of possible influences on the engineered structures (e.g. ground freezing, permafrost, geothermal heat pumps). However, detailed…

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Threats to groundwater quality in the Anthropocene
2021
Christian Moeck1, Mario Schirmer1,2

Groundwater quality degradation is a well-recognized phenomenon and has received considerable attention since the industrial revolution. In spite of this, many aspects concerning the understanding and management of groundwater as…

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Three-component fluid mixing: Evidence from trace element and isotope systematics in vent fluids and sulphides from Maka volcano, North Eastern Lau Spreading Centre
2021
Lukas Klose1,3, Manuel Keith2, Daniel Hafermaas2, Charlotte Kleint3,4,1, Wolfgang Bach3,4, Alexander Diehl3,4, Frederike Wilckens3,4, Christian Peters5, Harald Strauss5, Reiner Klemd2, Karsten Haase2, Andrea Koschinsky1,3

The axial volcanic edifice of Maka at the North Eastern Lau Spreading Centre shows intense hydrothermal activity at two vent sites (Maka HF and Maka South) emitting fluids of distinct…

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Time-dependent fracture permeability induced by fluid-rock interactions under intermittent and continuous flow
2021
Chaojie Cheng, Harald Milsch

Fractures are the predominant flow pathways in low-permeability rocks. Understanding the fluid-rock interactions that occur in rock fractures and their effects on fracture aperture variations is important for assessing the…

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Time-lapse imagery of a highly active submarine channel and its implications for seafloor geohazards
Maarten Heijnen (1,2), Michael Clare (1), Matthieu Cartigny(3), Sophie Hage(2,4), Gwyn Lintern (5), Cooper Stacey (5), Daniel Parsons (6), Stephen Simmons (6), Ye Chen (6), Esther Sumner (2), Justin Dix (2), John Huges Clarke (7),

National Oceanography Centre (1); Ocean and earth Sciences, University of Southampton (2); Departments of geography and Earth Sciences, Durham University (3); Department of Geoscience, University of Calgary (4); Natural Resources…

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Timing and mechanisms of Late Mesozoic to Early Cenozoic exhumation and uplift in Central Europe Hilmar von Eynatten, Jonas Kley, István Dunkl
2021
Hilmar von Eynatten, Jonas Kley, István Dunkl

Widespread exhumation and uplift affected Central Europe in Late Cretaceous to Paleogene time (e.g. Kley and Voigt, 2008, Geology, 36, 839-842). The area involved includes thrust-related basement uplifts and inverted…

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Tourism at Historic Mining Sites in Europe
2020
Eoin McGrath, Tim Workman & Des Johnston

Europe has a long mining history dating back to the Bronze Age (3300 – 1200 BC). Early mining activity was carried out in a primitive manner and only relatively high…

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Towards a green future – Where is the critical raw material resource potential in Europe?
2021
Daniel P. de Oliveira1,2

The “Green Future”; a concept of desirable European climate-neutral living conditions, which is the goal of the EU Green Deal means a huge increase in the use of mineral raw…

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Towards a harmonised inventory for European mineral resources
2021
Kari Aasly1, Mark Simoni1, Pasi Eilu2, Lisbeth Flindt-Jørgensen3

With the global increase in raw material demand there is a need for harmonized supporting tools for sustainable resource management in Europe. Europe needs to assess their resource potential, but…

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Towards a sediment budget of Permo-Triassic successions in the Central European Basin – implications for terrestrial perturbations around the Permian-Triassic Boundary (PTB)
2020
Maryam Mansouri & Matthias Hinderer

For the first time, we quantified the erosional pulse around the Permian-Triassic Boundary (PTB) over an entire sedimentary basin. Our GIS-based analysis relies on basin-wide homogenized seismic, sedimentary and stratigraphic…

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Towards identifying scale-dependent impacts on groundwater level dynamics with Deep Learning
2021
Annika Nolte1,2, Steffen Bender1, Jens Hartmann2, Stefan Baltruschat1,2

Detailed process-understanding of climatic and non-climatic drivers is generally required to estimate future groundwater availability under climate change. Groundwater level (GWL) dynamics are very sensitive to groundwater pumping, but information…

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Toxicological effects of rare earth elements to photosynthetic organisms
2021
Edith Padilla Suárez1, Antonietta Siciliano1, Marco Guida1,2, Giovanni Pagano2, Marco Trifuoggi3, Sara Serafini1, Emilia Galdiero1, Franca Tommasi4, Giusy Lofrano2, Isidora Gjata4, Antonios Apostolos Brouziotis1,3, Renato Liguori4, Giovanni Libralato1

Rare earth elements (REEs) have become a key component in many technological applications. Due to the rapid increase in their use, the potential environmental exposure has also expanded. However, the…

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Trace element partitioning between apatite and carbonatite melt at 800 °C and 200 MPa
2021
Haihao GUO, Fabrice Gaillard, Zineb Nabyl

Apatite is a pivotal mineral in carbonate rocks, because it can incorporate all of the major magmatic volatile species (H, P, F, S, Cl), as well as REE and HFSE…

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Trace-element characteristics of the Buck Reef Chert (Barberton, S. Africa)
2020
Naomi Soraya Lamers, Kirsten van Zuilen & Pieter Vroon

The Buck Reef Chert (BRC) forms the boundary between the Hooggenoeg and Kromberg formations of the Barberton Greenstone Belt (S. Africa). The BRC sequence is characterized by the alternation between…

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Tracing wedge-internal deformation by means of strontium isotope systematics of vein carbonate
2021
Armin Dielforder1, Igor M. Villa2, Alfons Berger2, Marco Herwegh2

Radiogenic strontium isotopes (87Sr/86Sr) of vein carbonates play a crucial role in the tectono-metamorphic study of fold-and-thrust belts and accretionary wedges and have been used to document fluid sources and…

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Traded metal scrap, traded alloying elements: A case study of Denmark and implications for circular economy
2021
Juan Tan

Since metals are often used in alloyed forms, proper management and efficient recycling of metal scrap is key to sustainable management of those alloying metals as well. Previous studies on…

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Tragulid Fauna of Napak
2020
Florian Altenberger (1), Julia Weilbold (2), Johann G. Raith (1), Albert Schedl (2), Christian Auer (2), Tanja Knoll (2), Holger Paulick (2) & Hassan Neinavaie (3)

Based on considerations such as economic importance and potential challenges to supply security some mineral raw materials are considered “critical”. One prominent example is tungsten, for which supply is strongly…

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Transcontinental retroarc sediment routing controlled by subduction geometry and climate change (Central and Southern Andes, Argentina)
2021
Eduardo Garzanti1, Tomas Capaldi2, Giovanni Vezzoli1, Mara Limonta1, Numa Sosa1,3

Central Argentina from the Pampean flat-slab segment to northern Patagonia (27-41°S) represents a classic example of a broken retroarc basin with strong tectonic and climatic control on fluvial sediment transport….

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Transition from hydrocarbon production to geothermal heat storage in the Upper Rhine Graben – the DeepStor project
2021
Eva Schill1,2, Jens Grimmer1, Katharina Schätzler1, Kai Stricker1, Judith Bremer1, Thomas Kohl1

The subsurface conditions of the Upper Rhine Graben are favorable for the development of novel geothermal utilization concepts. In particular, they allow optimization of energy use with flexible heat production…

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Transport mechanisms of hydrothermal convection in faulted sandstone reservoir —– Implications for kilometer-scale thermal anomalies in Piesberg quarry
2021
Guoqiang Yan, Robert Egert, Maziar Gholami Korzani, Thomas Kohl

A transient 3D model obtained from the Piesberg quarry as an illustrative example is based on idealized structural models that characterize all geological features during Late Jurassic rifting (162 Ma)…

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TRIM4Post-Mining: an integrated planning tool for the transition from coal extraction to re-vitalized post-mining landscape
2021
Hernan Flores1, Diego Restrepo2, Natalie Merkel2, Stefan Möllerherm1, Jörg Benndorf2

The TRIM4Post-Mining project aims to develop an integrated information modeling system to support decision-making and planning during the transition from coal exploitation to a re-vitalized post-mining landscape, enabling infrastructure development…

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Turning 80 years of global research on heat flow into a sustainable research data infrastructure
2021
Sven Fuchs

Measured data of the Earth’s surface heat flow are rare observables for heat transport processes in the Earth interior. Precise knowledge of heat flow is thus fundamental (i) to describe…

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Ultramafic-hosted volcanogenic massive sulfide deposits: an overlooked sub-class of VMS deposits forming in complex tectonic environments?
2021
Clifford Patten1, Rémi Coltat2, Malte Junge3, Alexandre Peillod4, Marc Ulrich5, Gianreto Manatschal5, Jochen Kolb1

Volcanogenic massive sulphide (VMS) deposits have been recognized both in fossil and present-day settings (e.g. mid-ocean ridges (MORs), back-arcs, island-arcs, fore-arcs) and are associated with different lithologies leading to variable…

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UN Framework Classification – a tool for Sustainable Resource Management
2020
Felix Noah Wolf (1), Dietrich Lange (1), Heidrun Kopp (1,2), Anke Dannowski (1), Ingo Grevemeyer (1), Wayne Crawford (3), Martin Thorwart (2), Anne Paul (4) & the AlpArray Working Group (5)

The Liguro-Provencal-basin was formed as a back-arc basin of the retreating Calabrian-Apennines subduction zone during the Oligocene and Miocene. The resulting rotation of the Corsica-Sardinia block is associated with rifting,…

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UN Framework Classification – a tool for Sustainable Resource Management
2020
Zoltán Horváth (1), Daniel de Oliveira (2), Kari Aslaksen Aasly (3), Mark Simoni (3), Lisbeth Flindt Jørgensen (4), David Whitehead (4), Antje Wittenberg (5), Ulrich Kral (6), Charlotte Griffiths (7), Harikrishnan Tulsidas (7) & Slavko Solar (8)

With the global increase of raw material consumption there is a growing need for standardized decision support tools for sustainable resource management both at global and EU-levels. The United Nations…

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Uncertainty and risk analysis in basin and stratigraphic modelling: the response surface approach
2021
Samer Bou Daher, Alcide Thebault

Any attempt at modelling natural phenomena includes a number of numerical assumptions on which we have little or no constraints. Basin and forward stratigraphic modelling are methodologies that aim at…

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Uncertainty Quantification for Geothermal Basin- and Reservoir-Scale Applications
2021
Denise Degen1, Mauro Cacace2, Magdalena Scheck-Wenderoth1,2, Karen Veroy1,3, Florian Wellmann1

Numerical simulations of the governing geophysical processes are crucial for geothermal applications in order to characterize the subsurface. This characterization presents us with major challenges ranging from the correct physical…

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Underground Hydrogen Storage (UHS) – status quo and perspectives in Germany
2021
Matthias Warnecke, Simone Röhling

Recently, politics and industry has discussed green hydrogen as one of the carbon-zero energy sources of the future. Besides many other countries, Germany formulates clear goals for the energy transition…

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Understanding morphological variation of the elbow joint in the Ursidae: Insights from 3D Geometric Morphometrics
2020
Samuel, Joseph Leeming (1,2), John, A Nyakatura (3) & Anneke, H van Heteren (2,4,5)

Variation in the skeletal morphology within the Carnivora has long been demonstrated as a predictor of a species’ ecological habits. The elbow joint in particular is a clear indicator of…

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Unexpected high amounts of H2 produced during serpentinization at magma-poor rifted margins
2021
Elmar Albers1, Wolfgang Bach1,2, Marta Pérez-Gussinyé1,2, Catherine McCammon3, Thomas Frederichs1,2

At magma-poor rifted margins, serpentinization of lherzolitic mantle rocks releases molecular hydrogen (H2) that supports chemosynthesis-based deep life. Until now, however, H2 fluxes in these systems remain largely unquantified. To…

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UNFC resources reporting code and national mineral resources accounting
2021
Janne Hokka, Pasi Eilu

Government organisations compile mineral resource data for national resource accounting. The information is collected and used in research, planning of mineral exploration, and in decision making on national and EU…

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Unique islets in SE Asia: How Holocene climate and sea-level controlled growth of a coral reef island
2021
Yannis Kappelmann1,2, Hildegard Westphal1,2, Dominik Kneer1, André Wizemann3, Thomas Mann4

Coral reef islands are unconsolidated landforms, composed of skeletal carbonate from surrounding reefs and related ecosystems. Facing the predicted rise of sea-level and a changing environment in the next decades,…

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Unraveling sub-seismic interwell-scale facies heterogeneity of Late Jurassic Arab D Member – Clues from outcrop analogue study to develop high-resolution reservoir models
2020
Ward Teertstra (1), Guido Hoetz (2)

Anhydrites Carbonates of the Leine formation, the third evaporitic cycle of the Zechstein group, are widely distributed in the Southern Permian basin. These strata are often drilled through by wells…

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Unraveling Zechstein 3 Anhydrite Structuration and possible implications for Geo-Drilling Hazards
2020
Ward Teertstra (1) & Guido Hoetz (2)

Anhydrites Carbonates of the Leine formation, the third evaporitic cycle of the Zechstein group, are widely distributed in the Southern Permian basin. These strata are often drilled through by wells…

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Use of three-dimensional implicit geological modeling to assist groundwater management of a karst aquifer
2021
Fernando Mazo D'Affonseca1,2, Olaf Cirpka2, Michael Finkel2

Although 3-D geological modeling has been mostly employed in the prospection and exploitation of ores, oil and gas, its importance in the field of groundwater resources management is considerably increasing….

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Using Artificial Intelligence for Disaster Management Providing Relief
2020
Niteesh Kumar Upadhyay (1) & Rathee Mahak (2)

We have seen drastic growth of Artificial Intelligence in the past few years and what seemed to be a distant dream earlier is now becoming a reality. Though there are…

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Using Collaborative Augmented Reality to improve Communication of 3D Geological Concepts in Education
Björn Wieczoreck

Introducing concepts of 3D geology to students can be difficult. While 2D geological maps and pictures are well supplemented by 3D animations and movies in presentation slides, for most students,…

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Using mineral magnetics to track migration in the Bittern and Pict Fields, Central North Sea
2021
Maryam Ahmed Abdulkarim, Adrian Muxworthy, Alastair Fraser, Martin Neumaier

Minerals magnetics has been proposed as a means of improving our understanding of petroleum systems. We have carried out extensive rock magnetic experiments on core samples from the Tertiary reservoir…

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Utilising magnetic minerals to track and identify hydrocarbon migration pathways and source regions: a case study on the Beatrice Field, Inner Moray Firth, UK North Sea
2021
Joseph Richard Perkins, Adrian Muxworthy, Al Fraser

Recent studies at Imperial College London have demonstrated that variations in magnetic mineralogy can be used to help track and quantify hydrocarbon migration. This work has built on past studies…

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V3Geo: A platform for sharing virtual 3D geoscience models
2020
Simon John Buckley (1), John Anthony Howell (2), Nicole Naumann (1), Kari Ringdal (1), Joris Vanbiervliet (1), Bowei Tong (1), Conor Lewis (1), Gail Maxwell (2) & Magda Chmielewska (2)

V3Geo is a new cloud-based repository for virtual 3D models in geoscience. It allows storage, search and viewing of 3D models commonly collected using photogrammetry, lidar or other laboratory-based 3D…

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VerLaPro – a 3D model of the shallow Paleozoic subsurface in the southern Ruhr Area
2021
Dirk Kaufmann1, Christian Rakers1, Bernd Linder1, Stefan Mengede2, Karsten Schaefer2, Daniel Wagener2, Martin Isaac2

For decades the Ruhr Area in western Germany was dominated by extensive coal mining. Today, relicts of abandoned mines and the near-surface cavities are a hazard factor, for example at…

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Virtual field trip to Late Jurassic
2021
Peter Braesicke1,5, Roland Bertelmann2,5, Jan Bumberger3,5, Sören Lorenz4,5

Digitalisation and FAIR data are overarching elements in the Helmholtz Research Field Earth and Environment (RF E&E) Program-Oriented Funding Phase IV (PoF IV). Already in the transition years from PoF…

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Virtual field trip to Late Jurassic Carbonates of Central Saudi Arabia
2020
Pankaj Khanna, Ahmad Ihsan Ramdani, Gaurav Siddharth Gairola & Volker Vahrenkamp

Late Jurassic carbonates of Saudi Arabia contain some of the the world’s most prolific oil-producing strata in super giant reservoirs. Small scale stratigraphic architecture and associated property and flow heterogeneities…

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Virtual field trip to Late Jurassic Hanifa Formation of the Central Saudi Arabia
2021
Pankaj Khanna, Ahmad Ihsan Ramdani, Teyyuba Adigozalova, Gaurav Gariola, Volker Vahrenkamp

Tuwaiq Mountain Escarpment in the Central Saudi Arabia exposes the Late Jurassic carbonates, which are one of the world’s most prolific oil-producing strata in the subsurface. The outcrops provide a…

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Virtual field trip to seismic scale outcrops of the Triassic, Edgeøya, Svalbard
2020
Simon John Buckley (1), Kari Ringdal (1), Isabelle Lecomte (2), Ingrid M. Anell (3) & Alvar Braathen (3)

Large-scale cliff sections on Edgeøya in the remote eastern part of the Svalbard Archipelago (Spitsbergen) comprise mostly Triassic sedimentary successions. These outcrops expose formations found on the offshore Barents Shelf,…

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Virtual Fieldtrips in Learning & Development: Geology 4 Non-Geologists – North Sea petroleum systems and reservoir geology, Dorset coast, UK
2020
Jürgen Grötsch (1), Young Kon Yong (2) & Maren Kleemeyer (2)

Training courses in industry are being moved from face-to-face events to virtual equivalents for cost reasons but also for convenience, ie availability of online training where and when needed. This…

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Virtual Fieldtrips in Shell Learning and Development: Carbonates in Oman
2020
Mia Steenwinkel (1) & Young Kon Yong (2)

Training courses in the industry are changing from face-to-face events to virtual equivalents. Although real-life field experience is missing in virtual trips, the main benefit is the availability of online…

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Virtual fieldwork in the Sorbas basin, Betic Cordillera, SE Spain
2020
Liviu Matenco, Meije Sibbel & Hans de Bresser

As part of the Earth Sciences curriculum at Utrecht university, first year master degree students get the option to join a Field Research Instruction Geology course in SE Spain. This…

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VIRTUAL GEOLOGY FROM THE LAB TO THE FIELD
2020
Meije Sibbel, Ernst Willingshofer, Meije Sibbel, Richard Wessels & Oliver Plümper

In this virtual fieldtrip we will review and discuss three case studies carried out at Utrecht University utilizing virtual reality (VR) and virtual field observations (VFO) across a range of…

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Virtual Outcrop Models – Chances and Challenges for Geoscience School Education
2021
Sylke Hlawatsch

Geoscience has a key role in adressing the challenges of sustainability, yet in German schools a regular subject such as Earth sciences does not exist. Teacher feel uncomfortable with teaching…

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Visual KARSYS – a web service for modelling karst aquifers in 3D
2021
Arnauld Malard1, Pierre-Yves Jeannin1, Manfred Vogel2, Simon Lopez3

A 3D web-service has been developed for the modeling and for the management of karst aquifers and related groundwater resources. Visual KARSYS allows users to build explicit models of karst…

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Volcanic structures and magmatic evolution of the Vesteris Seamount, Greenland Basin
2021
Katharina Anna Unger Moreno1,5, Janis Thal1, Wolfgang Bach1,2, Christoph Beier3, Karsten Matthias Haase4

The solitary intraplate volcano Vesteris Seamount is located in the Central Greenland Basin and rises around 3000 m above the seafloor with a total eruptive volume of ~500 km3. Newly…

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Volcanites of MORB and WPB character in the evaporitic Permian Haselgebirge Formation (Eastern Alps, Austria) and possible tectonic implications
2021
Christoph Leitner1, Friedrich Finger1, H. Albert Gilg2

The evaporitic Haselgebirge Formation hosts in many places small occurrences of basaltic rocks. The geochemistry of these basalts can potentially provide information about the tectonic setting of the Haselgebirge Formation…

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Wadi deposits of the Rotliegend revisited – key to unravel reservoir geometries in the Base Rotliegend of the Dutch-German border area
2020
Marita Felder (1), Camille Burgess (2) & Bert Clever(2)

An old play has recently been extended across the border from Germany into the Netherlands, an area previously thought to be barren of reservoir sandstones. The combination of core evaluation…

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Wall rock contamination and mineralogical modifications in carbonatite dykes of the Palabora Complex, South Africa
2021
R. Johannes Giebel1,2, Benjamin F. Walter3, Michael A.W. Marks4, Gregor Markl4

Contamination of carbonatite melts is often neglected due to a fast magma ascent and low liquidus temperatures. However, increased silicate mineral formation observed in numerous carbonatite occurrences world-wide requires an…

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What factors control the development of moats and their associated contourite drifts?
2021
Henriette Wilckens1, Elda Miramontes1, Tilmann Schwenk1, Thomas Lüdmann2, Christian Betzler2, Javier Hernandez-Molina3, Volkhard Spieß1, Antonio Cattaneo4

The interaction of sedimentary systems with oceanographic processes in deep-water environments is still not well understood, despite its importance for improving paleoreconstructions and for understanding source-to-sink sediment transport. The aim…

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Where and why: using a structural framework to contextualise and improve the understanding of processes leading to mineral occurrences
2020
Renata Barros (1), Shandro Mellaerts (2), Michiel Van Herck (2) & Kris Piessens (1)

The societal development towards climate neutrality and the ambition for economic growth and well-being in Europe rely on mineral raw materials. Mineral occurrences can be seen as manifestations of specific…

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Why are fluid-rock reactions crucial for sustainably utilizing geotechnical potentials of the deep subsurface, and to tackle future energy challenges?
2021
Sebastian Fischer

In recent years, the deep geological subsurface gained more and more attention as it offers various reservoirs potentially applicable for different geotechnical use options, e.g. deep geothermal energy, geological storage…

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Wind turbine signatures from long distances at the Gräfenberg Array
2021
Klaus Stammler, Lars Ceranna

Since 2012 many wind turbines have been installed on the Frankonian Jura and a number of them also in the vicinity of stations of the Gräfenberg array (GRF), consisting of…

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With World-Class Graphite, Pula Proves African Jr’s as Innovative & Ethical Influences
2021
Mary Stith

With a world-class graphite project in Tanzania (East Africa), The Pula Group, LLC is committed to a greener future. The high-quality graphite mineralization includes jumbo flakes developed to a depth…

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X-ray absorption spectroscopy study of Mn reference compounds for the identification and quantification of Mn species in soils
2021
Teresa Zahoransky1, Anna V. Wegorzewski2, Winnie Huong1, Christian Mikutta1

Chemical reactivity, mobility, and bioavailability of manganese (Mn) in the environment depend crucially on its speciation. Despite the broad application of X-ray absorption spectroscopy (XAS) to environmental samples, studies covering…

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Zircon Raman dating: Age calculation and data valuation
2021
Birk Härtel, Raymond Jonckheere, Lothar Ratschbacher

Zircon Raman dating is a debated concept in thermochronology. It is based on the disruption of the zircon lattice by α-disintegration of 238U, 235U, 232Th, and their daughter nuclides. This…

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µ-EDXRF based classification of chromites. A quick approach for testing hand specimen and drill cores
2021
Dieter Rammlmair, Wilhelm Nikonow

Chromites from ophiolites and layered intrusions show a wide variety in Cr#, Mg# and Cr/Fe ratios. These ratios provide information on the genesis of the chromite deposits e.g. the place…

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