Oil & Gas Geology ›› 2006, Vol. 27 ›› Issue (4): 433-441.doi: 10.11743/ogg20060401

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Fault systems and their tectonic evolution in the Eastern Tarim basin

Lu Huafu1, Wang Shengli1, Luo Juncheng2, Shu Liangshu1, Sang Hong2, Zhu Wenbin1, Li Yufeng2, Jin Ying'ai2   

  1. 1. Department of Earth Sciences, Nanjing University, Nanjing, Jiangsu 210093;
    2. Tarim Oilfield Company, PetroChina, Korla, Xinjiang 841000
  • Received:2006-04-30 Online:2006-08-25 Published:2012-01-16

Abstract:

Based on detailed interpretation of over 3000 km of seismic profiles,the fault systems in the Eastern Tarim basin have been established and three systems,the Kongquehe fault system,the Southeast fault system,and the extensional fault system,have been identified.The NW-trending Kongquehe fault system consists of the Kongquehe slope with the shape of tectonic wedge in the Paleozoic and the Early Triassic,the Yingjisu dextral transpressional fault series in the Late Jurassic and the Early Cretaceous,and the Kongquehe fault in the Cenozoic.It was related to collision between the Tarim massive colliding with the Central Kunlun terrane in the Silurian,and the Lasha/Qiangtang terrane collision and India/Tibet collision in the Mesozoic and the Cenozoic.The Southeast fault system includes the NE-trending northwestward thrusting Cheerchen fault in the Silurian,which reactivated in the Cretaceous,and the ENE-trending sinistral transpressional Altyn Tage fault in the Neogene and the Quaternary.The formation of Kongquehe fault was influenced by the collision between Tarim massive and Jungger massive in the Late Paleozoic,by the closing event of the Amur Sea Way in the Mesozoic,and by Indian-Tibet collision in the Cenozoic.The extensional fault systems are believed to be developed through the Cambrian,Ordovician,Early Silurian,Middle-Late Jurassic,and Paleogene.

Key words: Yingjisu transpressional fault series, Kongquehe fault system, Southeast fault system, extensional fault system, Eastern Tarim basin

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