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ANALYSES OF SUPERIMPOSED STRUCTURES IN THE NORTH TARIM UPLIFT, TARIM BASIN

Chen Chun-ming1, Lu Hua-fu1, Wang Guo-qiang1, Jia Dong1, Cai Dong-sheng2   

  1. 1. Department of Earth Sciences of Nanjing University, Nanjing; 2. Oil Research Institute of Bohai Corporation, CNOPC, Tianjin
  • Received:1998-09-20 Revised:1998-09-20 Online:1998-09-20 Published:1998-09-20

Abstract: Based on a comprehensive study of geological and geophysical data from the North Tarim Uplift, the authors investigated the deformational features, time and order, geodynamic background of superimposed structural deformation and hydrocarbon accumulation in the North Tarim Uplift. The superimposed structures can be identified as the NW-SE trending compressional structures and NE-SW trending compressional structures, which primarily acted in Permian and Triassic respectively, and the extensional structures formed during the Oligocene to Miocene. These superimposed structures compounded spatially, multipled temporally and produced three major superimposed structura1 deformation zones, i.e., Lunnan structural gone, Nanka-Yinmaili superimposed folds zone and Yangtake-Tiergen negative inversion structural zone. They are favorable for oil and gas prospecting.