石油与天然气地质 ›› 1991, Vol. 12 ›› Issue (1): 34-41.doi: 10.11743/ogg19910104

• 论文 • 上一篇    下一篇

川东鄂西长兴期海绵礁的特征和形成条件

陈成生, 张继庆   

  1. 成都地质矿产研究所
  • 收稿日期:1989-05-18 修回日期:1990-06-15 出版日期:1991-03-25 发布日期:2012-01-16

CHARACTERISTICS, FORMATION CONDITION AND RESERVOIR POTENTIAL OF UPPER PERMIAN CHANGXING FORMATION CALCISPONGE REEFS IN EAST SICHUAN AND WEST HUBEI

Chen Chengsheng, Zhang Jiqing   

  1. Chengdu Institute of Geology and Mineral Resources
  • Received:1989-05-18 Revised:1990-06-15 Online:1991-03-25 Published:2012-01-16

PDF (PC)

427

被引次数

9

摘要：

晚二叠世长兴期川东、鄂西碳酸盐岩台地的海绵礁主要有三种类型:台缘镶边骨架礁、台内线状或点状骨架礁和台内点状障积礁。第一成礁带发育在台地的东缘,第二成礁带位于断陷型淹没台地与开阔台地的交界带,第三成礁带发育在台地西部的缓坡上。礁体的形成、分布主要受断裂构造的控制。

关键词: 生物樵, 碳酸盐岩, 同生断裂, 海平面升降, 晚二叠世, 川东鄂西

Abstract:

The calcisponge reefs of the Upper Permian Changxing carbonate platform in Eastern Sichuan and Western Hubei Provinces can be divided into three types: rimming frame-work reefs developed on the eastern margin of the platform, linear or point framework reefs located within the platform and baffling point reefs on the ramp of the western plat-form, the framework reef complexes of which, both rimming and linear or point, are favourable oil and gas reservoirs. The formation and distribution of reef bodies are mainly controlled by faulting, especially synsedimentary faulting. The reef bodies developed throughout the whole Changxing stage, the best of which are middle and late stages. From the end of Changxing to Early Triassic, a rapid rising of sea-level took place, resulted in drowning out of the entire platform and all the reef bodies.