J4 ›› 2010, Vol. 40 ›› Issue (3): 527-534.

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Sedimentary Characteristics of Cambrian-Lower Ordovician Sequence in Peacock River Area in Tarim Basin, Xinjiang, NW China

KONG Qing-ying1,2, CHENG Ri-hui2   

  1. 1．Petroleum Exploration and Production Research Institute, Sinopec, Beijing 100083|China;2．College of Earth Sciences, Jilin University, Changchun 130061|China
  • Received:2009-11-09 Online:2010-05-26 Published:2010-05-26

Abstract:

Sedimentary facies of the Cambrian-Lower Ordovician sequence were studied by means of seismic, logging and outcrops. Seven facies were recognized, which are subabyss, shallow marine shelf, platform edge ramp, reef, open platform, restricted platform and platform evaporite facies. They can be grouped into three depositional environments, i.e. basinal, platform edge and platform. There are platform edge and platform deposits in Caohu, Weili and Tieganlike district, between which there are basinal deposits. Platform evaporite facies are located in the north of Caohu. Reef is widespread on the edge of the open platform both landward and seaward. This is favorable to petroleum accumulation.

Key words: Peacock River area, Cambrian-Lower Ordovician, sedimentary facies, sedimentary pattern, petroleum gas

CLC Number: 

  • P588.2
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