Articles

Sedimentary Facies and Evolution of the Permian and Triassic Strata in the North of Sichuan Basin

  • ZHAO Yongqing ,
  • XIONG Zhifu ,
  • LIU Yanting ,
  • JI Chunhui ,
  • DENG Jinhua ,
  • TAN Qinyin ,
  • DU Zhanhai
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  • 1. Exploration Southern Company of Sinopec, Chengdu 610041, China;
    2. Chengdu Institute of Geology and Mineral Resources, Chengdu 610081, China;
    3. Rumaila Project Department of Iranian Company, Overseas Exploration and Development Company of PetroChina, Panjin 124010, China

Received date: 2013-06-21

  Revised date: 2013-12-18

  Online published: 2014-03-07

Abstract

The sedimentary facies of the permian and triassic strata in the north of Sichuan Basin is detailedly studied on the basis of sedimentary facies of single wells, seismic data as well as surface outcrop data. Two depositional systems are recognized, and they are carbonate platform and carbonate ramp. On the basis of depositional facies analysis and comprehensive consideration of paleogeography, sedimentary environment, the sedimentary evolution of permian and triassic stratan is cleared. The process is from carbonate ramp to carbonate platform. The sedimentary system of lower Permian Qixia formation, Maokou formation and upper Permian Wujiaping formation are carbonate ramp, and the sedimentary system of changing formation is rimmed carbonate platform. Till the late Early Traissic Epoch, the north of the Sichuan basin evolved to uniform carbonate platform. The result may be a reference to the exploration of Sichuan Basin.

Cite this article

ZHAO Yongqing , XIONG Zhifu , LIU Yanting , JI Chunhui , DENG Jinhua , TAN Qinyin , DU Zhanhai . Sedimentary Facies and Evolution of the Permian and Triassic Strata in the North of Sichuan Basin[J]. Science & Technology Review, 2014 , 32(6) : 45 -53 . DOI: 10.3981/j.issn.1000-7857.2014.06.007

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