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Geoscience ›› 2010, Vol. 24 ›› Issue (5): 951-956.

• Water Resource and Environment • Previous Articles     Next Articles

The Controlling Factors and Types of Carbonate Reef of Permian Changxing  Formation in Northeast of Sichuan Basin

 ZHAO  Wen-Guang1, GUO  Tong-Lou2, CA  Zhong-Xian3,HUANG  Ren-Chun2, YANG  Bo4   

  1. 1.Research Institute of Petroleum Exploration & Development, PetroChina,Beijing100083, China; 2.Southern Exploration Division Company, SINOPEC,Chengdu, Sichuan610041, China; 3.Faculty of Resources, China University of Geosciences, Wuhan, Hubei430074, China; 
    4.Gansu Institute of Land Resources Planning and Research, Lanzhou, Gansu730000,China
  • Online:2010-09-24 Published:2012-03-28

Abstract:

Organic reefs of Permian Changxing Formation have been the main reservoir in northeast of Sichuan Basin. The reef types of Permian Changxing Formation are shelf margin reef and shallow ramp reef which are distributed in both sides of LiangpingKaijiang shelf. The shelf margin reef developed in Puguang area while shallow ramp reef developed in Yuanba area. Most reefs of Permian Changxing Formation appeared at highstand stage. Compared with shallow ramp reef, shelf margin reef had the characteristics of larger scale, less reefbuilding stages and relatively homogeneous reefbuilding organisms. The reef type was controlled by tectonics and sedimentation. The tectonic difference controlled the potential of reef and the sedimentary difference controlled the scale of reef.

Key words: organic reef, reef type, tectonics, sedimentation, northeast of Sichuan Basin

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