Comparative study of reef in depression and shelf edge in paleo-ocean of Changxing period Late Permian in Sichuan Basin

  • DUAN Jin-bao ,
  • TANG De-hai ,
  • LI Rang-bin
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  • Exploration Division Company, SINOPEC Co., Ltd., Chengdu 610041, China

Received date: 2016-06-26

  Revised date: 2016-07-19

  Online published: 2022-11-24

Abstract

Under the guidance of Changxing platform margin reef reservoir cognition, combination of the 3D and 2D seismic data, analysis of the sedimentary background, development model & ancient physiognomy were studied comprehensivly. In this study, evolution characteristics of reef in Pengxi-Wusheng depression edge in the middle of Sichuan Basin were analyzed, and three development models of reef in Tailai, Yongxingchang and Yihe depression edge in southeast of Sichuan Basin were put forward. Affected by North Kaijiang-Liangping shelf, Emei taphrogenesis & micro-palaeogeomorphology, the reef deposited dominately in depression edge in Tailai,low-energy bioclast-shoals deposited in Yongxingchang and row reef belt and patch reef developed in Yihe. Analysis of sedimentary pattern of Sichuan Basin during Changxing period, the deposition patterns of reef in Pengxi-Wusheng depression edge and Kaijiang-Liangping shelf margin were similar. The vertical developments of reef were in small scale, but the horizontal area distributed widely in depression edge.

Cite this article

DUAN Jin-bao , TANG De-hai , LI Rang-bin . Comparative study of reef in depression and shelf edge in paleo-ocean of Changxing period Late Permian in Sichuan Basin[J]. Journal of Marine Sciences, 2016 , 34(3) : 11 -18 . DOI: 10.3969/j.issn.1001-909X.2016.03.003

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