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《Acta Scientiarum Naturalium Universitatis Pekinensis》 2008-01
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Electron Spin Resonance Dating and Strike-Slip Characteristics of the Daquan Fault in the Beishan Area on the Border between Xingjiang and Gansu Provinces

ZHANG Yu,PAN Jinhua,LIU Chang,GUO Zhaojie The Key Laboratory of Orogenic Belts and Crustal Evolution, Ministry of Education, School of Earth and Space Sciences, Peking University, Beijing 100871  
The left lateral characteristics of Daquan fault was confirmed by: 1) remote sense images of the left-distortional drainage system; 2) statistics of scratches on the fault plane and cleavages in the fault zone; 3) micro-characteristics of fault rocks. ESR age of fault gouge indicated the fault movement occurred in early Pleistocene (1.2-1.5 Ma), whereas the branch faults movement occurred in ca. 300 ka. These data support that the formation of Daquan fault is closely related to the uplift process of Tibet, meanwhile it is also a long-distance effect of the continuous collision between Indian and Eurasia Plate and the uplift of Tibet during late Cenozoic.
【Fund】: 国家重点基础研究发展计划资助项目(2007CB411305)
【CateGory Index】: P542
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