Oil & Gas Geology ›› 2007, Vol. 28 ›› Issue (6): 755-761.doi: 10.11743/ogg20070608

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Segmentation characteristics and dynamic mechanism of the Che'erchen Fault in the Southeast Tarim Basin

Wang Buqing, Wang Qinghua, Han Lijun, Han Jie, Wang Ligang   

  1. Research Institute of Petroleum Exploration and Development, Tarim Oilfield Company, PetroChina, Korla, Xinjiang 841000, China
  • Received:2007-08-28 Online:2007-12-25 Published:2012-01-16

Abstract:

The deep and large-scale Che'erchen Fault has been active since the end of the Early Paleozoic. However,it wasn't until the end of the Mesozoic that the Altun Fault,the West Kunlun Fault,and the Che'erchen Fault,were combined as one whole system.According to the geometric and dynamic characteristics of the fault,the Che'erchen can be divided into two segments from west to east:the western segment and the eastern segment.The former with its well-developed branches has experienced several intense tectonic activities since the end of the Early Paleozoic,while the latter was active before the Mesozoic but less active after the Mesozoic.The long-distance stress resulted from collision between the Indian Plate and the Eurasian Plate had controlled the structural deformation of the Che'erchen Fault since the Mesozoic.During the Mesozoic and the Cenozoic,faulting in the western segment of the Che'erchen Fault was rather strong due to the structural stresses of both the Altun Fault and the West Kunlun Fault;while faulting in the eastern segment of the fault was less intensive because the compressive stress from the Ahun Fault was offset by the rising of the Altun Mountain and the piedmont tectonization of the Ahun Mountain.

Key words: segmentation characteristic, dynamics, Altun Fault, Che'erchen Fault, Southeast Tarim Basin

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