Visual KARSYS – a web service for modelling karst aquifers in 3DArnauld Malard , Pierre-Yves Jeannin , Manfred Vogel & Simon Lopez
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 aquifers via a 3D geological modeller (gmLib Python library) and a series of tools (i.e. algorithms) which provide characteristics of groundwater bodies by applying hydraulic principles. Visual KARSYS is designed for geologists or hydrogeologists working for public institutions or private companies, but also for administration...
The permeability of granite deformed in the brittle regime to large strains: Implications for the permeability of fractured geothermal reservoirsMichael Heap , Hugo Duwiquet , Luke Griffiths , Laurent Guillou-Frottier , Patrick Baud & Marie Violay
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 from depths corresponding to the brittle-ductile transition are brought to the surface via crustal-scale, permeable fault zones. To better understand the evolving permeability of reservoir rock during deformation in the brittle regime—fault formation and sliding on the fault—we performed triaxial experiments on samples of well-characterised...
Crystallisation sequence of a REE-rich carbonate melt: an experimental approachValentin Mollé , Fabrice Gaillard, Zineb Nabyl , Johann Tuduri , Ida Di Carlo & Saskia Erdmann
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 debated. This study aims to experimentally determine the behaviour of REE elements during carbonatite crystallisation, and if bastnaesite can be directly crystallised from a carbonate melt. Crystallisation experiments have been done from 900 to 600°C at 1 kbar on a REE-rich calciocarbonatitic composition. Calcite (Ca,REE)CO3...
Harmonised data on European raw materials, the creation and content of the MIN4EU databaseLisbeth Flindt Jørgensen , Eimear Deady , Špela Kumelj , Kari Aslaksen Aasly , Marc Urvois , Jørgen Tulstrup & Mikael Pedersen
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 deposits etc. Thus, the ground under our feet carries a large variety of raw materials from sand and gravel over granites and marbles to precious or critical metals and minerals. Humans have extracted these materials from the (sub)surface since prehistorical eras, and these indispensable substances...
Review of the European Lithium resourcesBlandine 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 in assessing its own resources, identifying a potential Li-industry and securing its own supply. In this context, a geographically-based compilation of the European lithium from both: 1) hard-rock, and 2) deep fluids occurrences and ore deposits, with their corresponding features (e.g., deposit types, Li-bearing minerals,...
Geodata management in a European perspective – The European Geological Data Infrastructure (EGDI)Dana Čápová , Jasna Šinigoj , Marc Urvois , Matt Harrison , Patrick Bell , Margarita Sanabria , José Román Hernández Manchado , Mikael Pedersen & Jørgen Tulstrup
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 few years after the projects ended. EuroGeoSurveys therefore decided to establish the EGDI which was first launched in 2016. This version consisted of a web GIS, dedicated GIS viewers for specific geoscientific topics, numerous distributed web services, a metadata catalogue, a database for pan-European harvested...
Bureau de Recherches Géologiques et Minières6
University of Orléans2
Geological Survey of Denmark and Greenland2
British Geological Survey2
Geological Survey of Slovenia2
University of Strasbourg1
École Polytechnique Fédérale de Lausanne1
Czech Geological Survey1
Norwegian Geotechnical Institute1
Norwegian Geological Survey1