A series of strike-slip faults occurr in north peri-cline area of the Tazhong Uplift in the Tarim Basin. The structural styles include flower structure

parallel high-steep fault

en-echelon structure etc. In the Middle Caledonian

the Tazhong-Ⅰ fault and the southern boundary fault were most active

and the NE-trending tear faults were formed because of the differential movement of NW-trending overthrust nappe or sliding block. In the Late Caledonian

the Tazhong uplift experienced strong oblique compression from the SE direction

which was the dynamic mechanism for the formation of strike-slip faults. This resulted in right-lateral strike-slip on the basis of basement weak zone. NE-trending strike-slip faults were formed in the tectonic setting of intraplate transpressional nature

and were connected with the NW-trending thrust fault. In the Late Caledonian to Early Hercynian

faults were developed in inheritance along the Middle Caledonian tear faults

and were characterized by multistage activities. The strike-slip faults not only greatly modified carbonate reservoirs

but also controlled the development of structural trap in the Paleozoic clasitc rocks. In addition

they also acted as important pathways of hydrocarbon migration.