The possible interplay of shallow and deep fluids in sedimentary basins: insights from geophysical surveying and downhole logging in the centre of the Thuringian Basin
To shed light on the coupled dynamics of near surface and deep fluids in a sedimentary basin on various scales, ranging from the pore scale to the extent of an entire basin, is of paramount importance to understand the functioning of sedimentary basins fluid systems and therefore e.g. drinking water supply. It is also the fundamental goal of INFLUINS (INtegrated FLuid dynamics IN Sedimentary basins), focusing on the nearby Thuringian basin, a well confined, small intra-continental sedimentary basin in Germany, as a natural geo laboratory. This basin with infill of up to about 2 km thickness mainly from Permo-Triassic times above a Paleozoic basement is characterised by several prominent NW-SE-trending fault zones. Newly acquired seismic reflection profiles reveal the architecture of the basin and vertical throw along the fault zones of up to several hundred meters. In the shallow subsurface, additional structural information is coming from numerous geo-electric profiles. Logging (downhole and MSCL) and recovered cores provide valuable constraints on rock physical properties and their variations mirroring e.g. depositional conditions and potential later fluid aided processes. In this talk, I will use this extensive data set to build a 3D process-oriented image of the basin from which then I will draw research questions addressing the evolution of the basins during the Cenozoic.
https://www.munich-geocenter.org/events/seminars/frontiers-in-earth-sciences-25/tba-8
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The possible interplay of shallow and deep fluids in sedimentary basins: insights from geophysical surveying and downhole logging in the centre of the Thuringian Basin
Abstract
To shed light on the coupled dynamics of near surface and deep fluids in a sedimentary basin on various scales, ranging from the pore scale to the extent of an entire basin, is of paramount importance to understand the functioning of sedimentary basins fluid systems and therefore e.g. drinking water supply. It is also the fundamental goal of INFLUINS (INtegrated FLuid dynamics IN Sedimentary basins), focusing on the nearby Thuringian basin, a well confined, small intra-continental sedimentary basin in Germany, as a natural geo laboratory. This basin with infill of up to about 2 km thickness mainly from Permo-Triassic times above a Paleozoic basement is characterised by several prominent NW-SE-trending fault zones. Newly acquired seismic reflection profiles reveal the architecture of the basin and vertical throw along the fault zones of up to several hundred meters. In the shallow subsurface, additional structural information is coming from numerous geo-electric profiles. Logging (downhole and MSCL) and recovered cores provide valuable constraints on rock physical properties and their variations mirroring e.g. depositional conditions and potential later fluid aided processes. In this talk, I will use this extensive data set to build a 3D process-oriented image of the basin from which then I will draw research questions addressing the evolution of the basins during the Cenozoic.
