The characteristics, formation of the strike-slip fault system in the middle Tarim Basin and its northern slope area

A series NE and NNE of strike-slip faults occurr in The Tazhong Uplift and its North Slope, but also to the development of local NW strike-slip fault, the fracture has important implications for the geological communication... [ view full abstract ]

A series NE and NNE of strike-slip faults occurr in The Tazhong Uplift and its North Slope, but also to the development of local NW strike-slip fault, the fracture has important implications for the geological communication oil sources, such as oil and gas migration. Basing on the 3D fine seismic interpretation results, we studied the geometric characteristics and the main activities of the timesof the strike-slip faults in Tazhong Uplift and its North Slope. combining kinematic characteristics research of Tazhong Uplift, we further explored the role of the uplift and differences tectonic deformation ofTazhong Uplift in strike-slip faults formation and evolution. Studies show that the strike-slip faults were complex flower structure, in the lower actual profile showing positive flower morphology, the upper showing negative flower shape, superimposed features. It is the main thrusts of displacement of Tazhong Uplift and its North Slope induced slip regulatory structure. corresponding to the middle Caledonian Ⅲ curtain of pressure torsion, early Hercynian of transtension. Caledonian mid Ⅲcurtain, the pressure torsional stress from Altun gradually decreasing from east to west, forming a lot of thrust faults, controlling the shape of Tazhong Uplift. In the thrust faults formation process, to adjust the main thrusts of displacement formed a large number regulator strike-slip fault that are nearly vertical to the NW thrust faults. Early Hercynian, the strike-slip faults turn pressure shear structure into transtensional tectonic in the extensional tectonics regional context.