Bernd Leiss
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View article: Geothermal implications of the lithosphere’s thermal structure in northern Pakistan
Geothermal implications of the lithosphere’s thermal structure in northern Pakistan Open
Conventional geothermal resources are typically associated with volcanically active plate boundaries, yet collisional orogens can also sustain elevated heat flow through radiogenic enrichment, crustal thickening, and rapid exhumation. Nort…
View article: Using fault maps for the preliminary screening of areas for underground storage of radioactive waste or for geothermal energy
Using fault maps for the preliminary screening of areas for underground storage of radioactive waste or for geothermal energy Open
A qualitative approach is presented for the preliminary screening of areas for the storage of radioactive waste or for geothermal energy production based on knowledge of damage zones. Different types of fault damage zones are described in …
View article: From faults to fractures – a German glossary based on English terms.
From faults to fractures – a German glossary based on English terms. Open
View article: Cover Image
Cover Image Open
View article: Apparent Joint Swarms Formed by the Crack‐Jump Process
Apparent Joint Swarms Formed by the Crack‐Jump Process Open
Joint swarms can be important components of fractured reservoirs. They are often explained as damage around faults or related to mechanical differences between layers, although this does not explain the close spacing of the joints. Joint s…
View article: Granitoids of the western Himalaya and Karakoram as potential geothermal reservoirs – A petrological, geochemical and petrophysical study
Granitoids of the western Himalaya and Karakoram as potential geothermal reservoirs – A petrological, geochemical and petrophysical study Open
Hot springs in various granitoid and gneissic complexes in northern Pakistan indicate elevated geothermal gradients, which warrants their evaluation for geothermal applications. Evaluation of such prospects requires extensive knowledge of …
View article: Use of Mohr diagrams to predict fracturing in rock
Use of Mohr diagrams to predict fracturing in rock Open
Inferences have to be made about likely structures and their effects on fluid flow in a geothermal reservoir at the pre-drilling stage. This is the case for the potential geothermal reservoir in Variscan metasedimentary rocks that are expe…
View article: Multiple target horizon exploration for the implementation of an integrated geothermal system for Göttingen, Germany
Multiple target horizon exploration for the implementation of an integrated geothermal system for Göttingen, Germany Open
To boost the contribution of geothermal energy to Europe’s energy transition, exploration and exploitation must extend to new regions and play types. The MEET (Multidisciplinary and multi-context demonstration of EGS exploration and …
View article: Use of Analogue Exposures of Fractured Rock for Enhanced Geothermal Systems
Use of Analogue Exposures of Fractured Rock for Enhanced Geothermal Systems Open
Field exposures are often used to provide useful information about sub-surface reservoirs. This paper discusses general lessons learnt about the use of deformed Devonian and Carboniferous meta-sedimentary rocks in the Harz Mountains, Germa…
View article: Spatial variation of radiogenic heat production related to the crystalline rock types in the western Himalaya-Karakoram region of Pakistan 
Spatial variation of radiogenic heat production related to the crystalline rock types in the western Himalaya-Karakoram region of Pakistan  Open
<p>The western Himalaya-Karakoram region in northern Pakistan has such hydrothermal features as hot springs and alteration zones. The heat source for these features remains unclear, with suggested mechanisms including radiogenic heat…
View article: Multi-stage evolution of the South Tibetan Detachment System in central Himalaya: Insights from carbonate-bearing rocks
Multi-stage evolution of the South Tibetan Detachment System in central Himalaya: Insights from carbonate-bearing rocks Open
View article: The "Hexagon concept": A fundamental approach for the Geoscientific Spatial Data Compilation and Analysis at European Scale
The "Hexagon concept": A fundamental approach for the Geoscientific Spatial Data Compilation and Analysis at European Scale Open
Growing interest in the deep geothermal potential of regions outside the classical target zones in Europe comes along with an increased demand for geoscientific spatial data (geodata) on various scales and resolutions to estimate the theor…
View article: Applying Variscan Metasediments as an EGS Reservoir - A Conceptual 3D-Structural Model as a First Approach
Applying Variscan Metasediments as an EGS Reservoir - A Conceptual 3D-Structural Model as a First Approach Open
To explore deformed Variscan meta-sediments as a potential geothermal reservoir for heat supply of the Göttingen University Campus, one of the first approaches is to set up conceptual 3D-structural model within the EU-Horizon-2020-MEET-pro…
View article: Integrating deep, medium and shallow geothermal energy into district heating and cooling system as an energy transition approach for the Göttingen University Campus
Integrating deep, medium and shallow geothermal energy into district heating and cooling system as an energy transition approach for the Göttingen University Campus Open
A subsurface exploration strategy of geothermal energy utilization for district heating and cooling system for the Göttingen campus in Germany – a demo site of the EU-Horizon 2020 project MEET – is presented. Preliminary geological investi…
View article: Characterizing the microstructural anisotropy of fine-grained phyllosilicate-rich rocks
Characterizing the microstructural anisotropy of fine-grained phyllosilicate-rich rocks Open
The physical properties of claystones, shales, and slates are highly dependent on the alignment of phyllosilicate minerals. With increasing overburdening, the shape and the crystallographic preferred orientation of these minerals are affec…
View article: Long-Term Evolution of Fracture Permeability in Slate: An Experimental Study with Implications for Enhanced Geothermal Systems (EGS)
Long-Term Evolution of Fracture Permeability in Slate: An Experimental Study with Implications for Enhanced Geothermal Systems (EGS) Open
The long-term sustainability of fractures within rocks determines whether it is reasonable to utilize such formations as potential EGS reservoirs. Representative for reservoirs in Variscan metamorphic rocks, three long-term (one month each…
View article: Elastic anisotropy of oceanic serpentinites &#8211; influence of CPO and microstructure
Elastic anisotropy of oceanic serpentinites – influence of CPO and microstructure Open
<p>Physical properties of rocks are mainly controlled by the modal composition, crystallographic preferred orientation (CPO) and microstructure of a rock. One of the most relevant physical properties related to the interpretation of …
View article: Data related to 'Deformation, CPO and Elastic Anisotropy in Low-grade Metamorphic Serpentinites, Atlantis Massif Oceanic Core Complex '
Data related to 'Deformation, CPO and Elastic Anisotropy in Low-grade Metamorphic Serpentinites, Atlantis Massif Oceanic Core Complex ' Open
High-energy X-ray diffraction data of serpentinites obtained at ID22, ESRF. Data is image plate detector images.
View article: Relocated micas in marble &#8211; indicators for postdeformational microfabric modification
Relocated micas in marble – indicators for postdeformational microfabric modification Open
<p>A relocation of mica grains in marbles can be observed as trace of newly precipitated calcite material in cathodoluminescence microscopy analysis. Mica grains relocate by rotation and/or translation from foliation parallel to new …
View article: Slates: a potential rock type to extract geothermal energy from the underground?
Slates: a potential rock type to extract geothermal energy from the underground? Open
<p>Commonly used host rock reservoirs for Enhanced Geothermal Systems (EGS) are composed of granite, as they display highly conductive and sustainable fracture networks after stimulation. However, considering the large amount of meta…
View article: EU-Projekt MEET: neue Ansätze »Enhanced Geothermal Systems (EGS)« – Göttinger Unicampus als Demoprojekt
EU-Projekt MEET: neue Ansätze »Enhanced Geothermal Systems (EGS)« – Göttinger Unicampus als Demoprojekt Open
Um die tiefengeothermische Energiegewinnung künftig möglichst flächendeckend, effizient und bei der Wärmeversorgung verbrauchernah einsetzen zu können, sind neue Erkundungs- und Erschließungsstrategien auch jenseits der klassischen Potenzi…
View article: Close-range sensing workflows in Structural Geology based on open-source/open access solutions
Close-range sensing workflows in Structural Geology based on open-source/open access solutions Open
In Structural Geology, many projects start with intensive field-based data acquisition campaigns, which might be performed in quite different types of natural or artificial outcrops. For some years, this field work has been substantially i…
View article: Suitability of terrestrial Lidar and digital photogrammetry for surveying and analysis of fold structures
Suitability of terrestrial Lidar and digital photogrammetry for surveying and analysis of fold structures Open
Quantitative fold structure analyses at different scales are essential for deducing deformation mechanisms and the reconstruction of the deformation history of orogens. However, not only the field surveying of fold structures, especially i…
View article: Fluid inclusion and microfabric studies on Zechstein carbonates (Ca2) and related fracture mineralizations – New insights on gas migration in the Lower Saxony Basin (Germany)
Fluid inclusion and microfabric studies on Zechstein carbonates (Ca2) and related fracture mineralizations – New insights on gas migration in the Lower Saxony Basin (Germany) Open
New petrographic and fluid inclusion data from core samples of Upper Permian dolomitic limestone (Hauptdolomit, Zechstein group, Stassfurt carbonate sequence) from a gas field located at the northern border of the Lower Saxony Basin (LSB) …
View article: Putting the slab back: First steps of creating a synthetic seismic section of subducted lithosphere
Putting the slab back: First steps of creating a synthetic seismic section of subducted lithosphere Open
View article: Harzgeologie 2016
Harzgeologie 2016 Open
Dieser Band enthält Beiträge zur Geologie des Harzes und seines Umfeldes, die anlässlich des 5. Workshops Harzgeologie am Geowissenschaftlichen Zentrum der Georg-August-Universität Göttingen vorgestellt wurden. Der Band umfasst die Kurzfas…