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《Oil & Gas Geology》 2006-04
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Right-lateral strike-slip thrust system and its dynamics along the northern margin of Qaidam basin

Xiao Ancheng1~(1),Yang Shufeng~(1),Chen Xiaogan~(1),Dang Yuqi~(2),Chen Xinling~(2),Chen Yuanzhong~(3),Wang Lian~(1)(1.Department of Earth Sciences,Zhejiang University,Hangzhou,Zhejiang 310027;2.PetroChina Qinhai Oilfield Company,Donghuang,Gansu 736200;3.Donghuang Branch of BGP,CNPC,Donghuang,Gansu 736200)  
Interpretation of geophysical data and analysis of fault systems confirm that structures in the northern margin of Qaidam basin were formed after the Pliocene and occur as a series of right-lateral strike-slip thrusts.The faults within the strike-slip thrust belts occur as structure in sectional view,thus direct correlation of strata between the hanging wall and footwall is impossible. The formation of the right-lateral oblique thrust belts were controlled by the N-S oblique thrusting of South Qilian Orogeny and the main terrestrial stress came from the S-N intracontinental subduction of the north margin of Qaidam massive.To interpret the right-lateral strike-slip thrusting,a kinematics model is also provided.
【Fund】: 国家“十五”科技攻关资助项目(2004BA616A-04-01);; 中国石油青海油田分公司资助项目(02-107401-7)
【CateGory Index】: P544.4
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