THE KINEMATIC CHARACTERISTICS OF THE FAULT SYSTEM OF QAIDAM BASIN AND ITS DYNAMIC MECHANISM

doi:10.3863/j.issn.1674-5086.2010.06.010

西南石油大学学报(自然科学版) ›› 2010, Vol. 32 ›› Issue (6): 46-52.DOI: 10.3863/j.issn.1674-5086.2010.06.010

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THE KINEMATIC CHARACTERISTICS OF THE FAULT SYSTEM OF QAIDAM BASIN AND ITS DYNAMIC MECHANISM

YUAN Ya-juan^1,2，LV Bao-feng³，LIU Jian-bao^1,2,GUO Feng^1,2，SHI Qiu-hua^1,2

1.Guangzhou Institute of Geochemistry，Chinese Academy of Sciences，Guangzhou Guangdong 510640，China；2.Graduate University of China Academy of Sciences，Shijingshan Beijing 100049，China；3.School of Marine Sciences，Sun Yat-Sen University，Guangzhou Guangdong 510275，China；

Received:1900-01-01 Revised:1900-01-01 Online:2010-12-20 Published:2010-12-20

Abstract

Abstract: Based on the precise seismic interpretation and by means of cross-section technique，we analyze the geological evolution history of the Qaidam Basin and the unique fault structure system which was formed in different tectonic dynamic backgrounds.It is suggested that with the compressional effect and strike-slip regional stress，three fault systems (northern，southern and north-west)are formed in Qaidam Basin.These faults are reverse and strike-slip faultones mostly，and accompanied by a small number of synsedimentary faults，detachment faults，and inverted faults，etc.The restorations of the balanced seismic sections indicate that the generated times of the faults are different.Some of them are formed within Miocene；some are formed from Pliocene to Quaternary separately，and the others are active in the whole process of basin evolution history.These faults have undergone the expansion in Jurassic，the initial compression in Paleogene，the large amplitude compressional strike-slip in Neogene before they fell into patterns in Quaternary.

Key words: Qaidam Basin, faults, geometry, kinematics, dynamic model

CLC Number:

TE121

YUAN Ya-juan;LV Bao-feng;LIU Jian-bao;GUO Feng;SHI Qiu-hua;. THE KINEMATIC CHARACTERISTICS OF THE FAULT SYSTEM OF QAIDAM BASIN AND ITS DYNAMIC MECHANISM[J]. 西南石油大学学报(自然科学版), 2010, 32(6): 46-52.

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THE KINEMATIC CHARACTERISTICS OF THE FAULT SYSTEM OF QAIDAM BASIN AND ITS DYNAMIC MECHANISM

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