Xinjiang Petroleum Geology ›› 2005, Vol. 26 ›› Issue (4): 393-396.

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Himalayan Movement and Petroleum A ccumulation in Jiuxi Basin

ZHOU Xiao-feng1,ZHAO Ying-cheng2 ,ZHANG Ya-jun2   

  1. 1. Lanzhou Institute of Geology, Chinese Academy of Sciences, Lanzhou, Gansu 730000, China;
    2. Northwest Sub-Institute, Research Institute of Petroleum Exploration and Development, PetroChina, Lanzhou, Gansu 730020, China
  • Received:2005-03-07 Online:2005-08-01 Published:2020-11-23

Abstract: Jiuxi basin is located in the northeastern margin of Qinghai-Tibet plateau with active natural earthquake. Himalayan movement in this basin can be divided into eleven stages in terms of weak-strong intensity of structural compression. The Middle Pliocene is its main deformation/formation stage and petroleum accumulation stage in this area. The structural deformation originates in Oligocene. With cont inuous north-shifting of sedimentary center, the development periods of each structural belts tend to postponing from the south to the north, thus controlling the fault- related fold, structural trap and zonal distribution pattern of oil-gas reservoirs in this area. It is indicated that the natural earthquake is an important role in petroleum migration and accumulation.

Key words: Jiuxi basin, Himalayan movement, natural earthquake, petroleum accumulation

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