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Faults and Fracture Networks in Upper Muschelkalk Outcrop Analogues Detected by Photogrammetry, Upper Rhine Graben (URG), Germany

Merz, Lena; Bauer, Uwe; Hilgers, Christoph

Abstract (englisch):
Fracture distribution is of prime importance in URG carbonate reservoirs and reflects the orientation of stress during deformation. Since subsurface data are limited, numerous studies derive data from field analogs. They include fault-fracture scaling relationships (e.g. Meier et al., 2015), fold-fracture relationships (e.g. Lamarche et al., 2012), fracture-bedding relationships (e.g. Ladeira and Prince, 1981) and connectivity of fracture networks (e.g. Sanderson et al., 2018). We studied outcrops on the eastern shoulder of the URG with dronebased photogrammetry in order to conduct fracture geometries of a reservoir analogue and evaluate the data with an automated workflow.
W-E opening of the URG commenced in the late Eocene, with sinistral strike slip caused by NS alpine compression and continued with W-E extension (Schuhmacher 2002). However, insitu stress variations from the generally described regional stress were observed in the URG, e.g. depending on lithology (Meixner 2016; Valley and Evans, 2009) and structures. Additionally, fracture geometry depends on the rock mechanical properties, which determine clustering of fractures (Olson et al., 1993). ... mehr

Zugehörige Institution(en) am KIT Institut für Angewandte Geowissenschaften (AGW)
Publikationstyp Poster
Publikationsjahr 2019
Sprache Englisch
Identifikator KITopen-ID: 1000126732
Veranstaltung DGMK/ÖGEW-Frühjahrstagung (2019), Celle, Deutschland, 25.04.2019 – 26.04.2019
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