Composite Strike-Slip Deformation Belts and Their Control on Oil and Gas Reservoirs: A Case Study of the Northern Part of the Shunbei 5 Strike-Slip Deformation Belt in Tarim Basin, Northwestern China

Strike-slip deformation belts are interesting structures in the crust and of significance petroleum exploration. The Shunbei 5 fault belt (SB5), a long strike-slip Tarim Basin, played an important role formation recently discovered major oilfield known as oilfield. In this study, models plan view vertical profile were established to interpret SB5 with multi-cycled tectonic activities. To end, its structural framework, evolution, associated plate tectonics investigated using 2D 3D seismic data. was formed dextral simple shear at end Middle Ordovician. view, R-shears P-shears local transpressional transtensional observed. Along profiles, various styles occurred depths strata response stratigraphy mechanisms. Although these show clear boundaries between them, they correspond same time, indicating that underwent simultaneously. second activity late Ordovician, during which it consisting left-stepping en echelon R-shears. progressive deformation. Subsequently, several strike slips weak strength. Notably, cut through deep Cambrian gypsum salt layer connected Lower source rock Ordovician carbonates form oil gas reservoirs. reference value interpretation other subsurface belts.