461 Works

The educational role of historical mining sights for sustainable use of geological ressources – examples from the UNESCO Global Geopark Bergstraße-Odenwald

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 showcase for landscape modification and education for sustainable development (ESD). As elements of the recent cultivated landscape, they provide an excellent motive to discuss aspects of utilization of geological raw materials in actual products, their provenance and related mining and processing. In addition, deep insights...

Traded metal scrap, traded alloying elements: A case study of Denmark and implications for circular economy

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 the trade of metals and metal containing products focused mainly on the carrying major metals themselves, however, the quantity and type of their embodied alloying elements remain rarely investigated. In this paper, we aim to address this knowledge gap by compiling an alloying element composition...

Radon Emanations from Soils: Case Study of Central Ukrainian Uranium Province

Valentyn Verkhovtsev , Tamara Viktorivna Dudar , Yurii Tyshchenko & Volodymyr Pokalyuk
Ukraine is known as a uranium mining country located in the Central-Eastern Europe. The authors have been studying radioecological situation within the Central Ukrainian Uranium Province where the uranium deposits are located (operated, dormant and perspective ones) for more than 10 years already. Radioecological research, including the radon emanations from soils, allowed us allocating radon-hazardous areas associated with uranium mineralization. The recently studied Mykhailivska ore area (south-eastern part of the Ukrainian Shield) is a unique...

Why are fluid-rock reactions crucial for sustainably utilizing geotechnical potentials of the deep subsurface, and to tackle future energy challenges?

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 of CO2 and H2/energy. In this context, knowledge about the occurrence and the controlling processes of fluid-rock reactions in space and time is important to guarantee sustainable long-term reservoir utilization. While fluid-rock reactions occur at pore scale, they can significantly influence both reservoir-scale (transport) processes...

Current use of geological resources under the view of sustainability - examples from the UNESCO Global Geopark Harz . Braunschweiger Land . Ostfalen

Henning Zellmer & Volker Wilde
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 through recycling and the use of alternative energies or have been replaced by imported products. The last open-cast lignite mine in Schöningen was closed in 2016, the last Harz ore mine in Bad Grund in 1992 and the last iron ore mining in the Salzgitter...

Mass movements in Germany - contributions to the landslide susceptibility modeling

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 the period from 2018 to 2020. The objective pursued in this intervention was to review the practical feasibility of the spatial assessment (modeling) of the landslide susceptibility in Germany both at regional and nationwide level. The chosen approach took into consideration the specific framework conditions...

Sustainable mining of sand and gravel in the UNESCO Global Geopark Harz.

Claus Evers & Henning Zellmer
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, among other things. It is also active in the recycling sector, e.g. producing recycled mineral mixtures. An important aspect of sustainability is that the unconsolidated rock for construction work in the region has only short transport routes. This saves massive amounts of CO2. The yield...

Analysis of surface displacements caused by mine flooding for the project FloodRisk with SAR Interferometry, GNSS and Levelling

Markus Even , Malte Westerhaus & Daniel Schröder
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 during mine flooding”, the consequences of the rising mine water levels are investigated from a multidisciplinary perspective. Geodetic, geophysical, geomechanical and geological approaches are combined to develop a conceptional model for flooding induced surface displacements and seismicity. Saarland, Ruhr area and Ibbenbüren have been chosen...

Rock slope failures along the Forkastningsfjellet coastline, Svalbard: characteristics and implications for controlling and triggering factors.

Dirk Kuhn , Jewgenij Torizin , Michael Fuchs , Reginald Hermanns , Tim Redfield & Dirk Balzer
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 investigate the coastal range of Forkastningsfjellet, Svalbard, which is affected by rock slope deformations of different magnitudes and age. Based on a detailed multidisciplinary investigation, we discuss the causes, kinematics and timing of rock slide activity. The distinct stair-stepped morphostructural relief of the Forkastningsfjellet ridge...

A key option to transfer geosciences – relate geoheritage to fun

Marie-Luise Frey , Christine Hogefeld , Pascal Schmitz & Klaudia Wolf
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 of the 21st century with the formation of the European Geoparks Network in 2000 and the Global Geoparks Network in 2004, a new, consequent professional way of transfering geosciences was implemented. This includes information, education, geotourism, sustainable development of territories and at sites, e.g. Messel...

Combined Fluorescence Imaging and LA-ICP-MS Trace Element Mapping ofStalagmites: Microfabric identification and interpretation

Jakub Sliwinski & Heather Stoll
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 fluorescence variations. Seasonal banding is evident with both methods and may be attributed to lignins/humic acids based on fluorescence absorption and emission characteristics. Some lateral variations in fluorescence present as saw-tooth “spires” and demonstrate disruptions of seasonal banding, corroborated by trace element variations (most prominently...

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

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. In the process, it folded the underlying strata to a depth of approx. 270–290m. It is considered one of the best examples worldwide of large-scale glaciotectonic deformation. As a result of the compression, lignite, glass sands and clays, were pushed to the surface, and a...

Scandium and Rare Earths in Major Rivers in Sweden

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. However, a better understanding of the distribution and behaviour of Sc is important, as its use in industry is expected to grow exponentially in future, which will likely result in an increasing Sc release into the environment. Here, we report and discuss Sc and REY...

Development of a fluid treatment strategy to enable combined raw material and freshwater recovery from geothermal fluids

Valentin Goldberg , Daniel Winter , Fabian Nitschke , Diego Morata , Joachim Koschikowski & Thomas Kohl
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 well known that the highly mineralized thermal waters that circulate during the extraction of geothermal energy have, in some cases, significant enrichments of economically strategic elements such as lithium, rubidium, antimony or magnesium. The extraction of mineral resources from thermal waters is still challenging in...

Stromatolitic microorganisms in and on top of fluid-escape structures of the 3.2 Ga Moodies Group

Sebastian Reimann , Christoph Heubeck , Martin Homann , Deon Johannes Janse van Rensburg & Michael Wiedenbeck
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 preserves silicified photosynthetic and sulfate-reducing metabolic signatures in sandstone-dominated, terrestrial to shallow-marine strata. Large fluid-escape structures are common in thick-bedded kerogen-laminated sandstones of (sub-)tidal facies. We document and interpret silicified, massive and laminated carbonate aggregates and beds, both of likely microbial origin, within and on...

Shaping responsible future experts: the need for integrating Geoethics in Geoscience university education

Dominic Hildebrandt
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 to find sustainable solutions to these problems. Geoethics literacy is needed to qualify Geoscientists to work responsibly on complex tasks at the interface to society. Also, Geoethics deals with our own Geoscience philosophy and can therefore help to address current problems in Geoscience academia –...

Facies analysis and petrography of Permian sandstones - key for stratigraphy and depositional environment of a new tetrapod track site (Southern Permian Basin, Germany)

Sebastian Germann, Jörg Schneider, Birgit Gaitzsch & Michael Buchwitz
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 and burrow traces). This assemblage is unique in the late middle Permian deposits of Europe and plays a crucial role in the correlation of pre-Zechstein continental deposits and therefore for the global biostratigraphic framework of the middle to late Permian (Schneider et al., 2020). The...

Palaeofloral response to base level changes in the late Permian Bowen and Galilee basins (Australia)

Alexander Wheeler , Joan Sharon Esterle & Annette Elizabeth Götz
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 paralic and marine sections. The uppermost Permian sequence in these basins features spatiotemporal facies shifts but the regionally pervasive nature of the coal seams allows for the examination of the palaeoflora in context of changing environments through time between these bounding surfaces. The predominant flora...

Shallow-marine carbonate cementation in Holocene segments of the calcifying green alga Halimeda

Thomas Mann , André Wizemann , Marleen Stuhr , Yannis Kappelamann , Alexander Janßen , Jamaluddin Jompa & Hildegard Westphal
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 of carbonate platforms. However, many early-diagenetic cements that developed in the marine phreatic environment are likely to become obliterated during later stages of meteoric or burial diagenesis. In this contribution, a petrographic microfacies analysis of Holocene Halimeda segments collected on a coral island in the...

Intragranular halogen (F, Cl, Br), S and δ37Cl variability as determined by SIMS in sodalite and eudialyte from the Ilímaussaq intrusion, South Greenland

Hans G. M. Eggenkamp, Michael A. W. Marks , Thomas Ludwig & Gregor Markl
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 Spectrometry (SIMS). Samples show either sodalite and eudialyte in direct contact, or sodalite/eudialyte embedded in Cl-free minerals (nepheline, feldspar). Comparing samples allows deciphering potential halogen and S exchange between these minerals during rock cooling. Results suggest that sodalite (7 wt%) and eudialyte (1.2 wt%) have...

A new approach for 3d temperatur modelling in areas with sparse data - an example from northern Saxony-Anhalt (Germany)

Jacob Wächter, Christian Olaf Müller, Alexander Malz & Klaus-Jörg Hartmann
Landesamt für Geologie und Bergwesen Sachsen-Anhalt, Germany

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 into account the geological structure or lithological and thermal conductivity conditions of the subsurface. Herein, we present a new approach for the parameterization and modelling of subsurface temperatures for areas with sparse available data. We used temperature...

European Minerals Inventory as part of the Mineral Intelligence for Europe

Špela Kumelj, Jasna Šinigoj , Duška Rokavec , Andrej Vihtelič , Lisbeth Flindt Jørgensen & David Whitehead
Geological Survey of Slovenia (1); Geological Survey of Denmark and Greenland, Denmark (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 inventory. Therefore mineral data from seven South East Europe countries (Serbia, Albania, Bosnia and Herzegovina, Croatia, North Macedonia and Montenegro) were obtained , evaluated and transformed into Inspire compliant common European...

Multiphase mass and heat transfer in fractured high-enthalpy geothermal systems

Yang Wang , Stephan de Hoop, Denis Voskov , David Bruhn & Giovanni Bertotti
TNO Applied Geosciences (1); TNO Advisory Group for Economic Affairs (2); TNO Geomodelling (3); TNO Geo Data and IT (4); TNO Monitoring and Control Services (5); TNO Data Science (6) 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 dynamic transport process. However, accurate modeling methodologies for thermal high-enthalpy multiphase flow within fractured reservoirs...

Orbital forcing of Triassic megamonsoon activity documented in lacustrinesediments from Ordos Basin, China

Runjian Chu, Huaichun Wu, Rukai Zhu & Qiang Fang
China University of Geosciences (Beijing), China (1); Research Institute of Petroleum Exploration Development, PetroChina, Beijing, China (2)

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 the intertropical convergence zone (ITCZ) should be the most remarkable. Here, continuous and well-dated proxy records are used to study monsoon activity in the northeastern Tethys from the...

Trace-element characteristics of the Buck Reef Chert (Barberton, S. Africa)

Naomi Soraya Lamers, Kirsten van Zuilen & Pieter Vroon
Vrije Universiteit Amsterdam, The Netherlands

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 black, white, black white, iron-rich and greenish grey cherts. The 900m BARB3 drill core of the Barberton Drilling Project provides an unique opportunity to study parts of the BRC that are weathered up to a depth of 30 meters...

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  • Karlsruhe Institute of Technology
  • Helmholtz Centre Potsdam - GFZ German Research Centre for Geosciences
  • Federal Institute for Geosciences and Natural Resources
  • Technical University of Darmstadt
  • University of Bremen
  • RWTH Aachen University
  • University of Tübingen
  • Utrecht University
  • Ludwig-Maximilians-Universität München
  • GEOMAR Helmholtz Centre for Ocean Research Kiel