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Chinese Science Bulletin

, Volume 46, Issue 8, pp 690–693 | Cite as

Depositional architecture and developing settings of large-scale incised valley and submarine gravity flow systems in the Yinggehai and Qiongdongnan basins, South China Sea

  • Changsong Lin
  • Jingyan Liu
  • Shixiang Cai
  • Yanmei Zhang
  • Ming Lu
  • Jie Li
Notes

Abstract

In the Ying-Qiong basins in the South China Sea developed a set of giant inner shelf slope and submarine gravity flow deposits in the Ying-Huang formations since the Late Miocene. These deposits can be classified into 9 sequences in which slope slump-debris flow, slope fan and particularly, the large-scale axial basin-floor incised valley fills have been recognized. They were distributed in a distinctive pattern attributed to tectonic control. The development of shelf slopes and abyssal plains in the basins was related to the last episode of rapid subsidence and a large amount of sediment inputs. Large-scale basin-floor incised valleys, formed during the late Miocene and Pliocene, indicate several major sea level falls that occurred in the South China Sea.

Keywords

incised valleys gravity flow systems Ying-Qiong basins 

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Copyright information

© Science in China Press 2001

Authors and Affiliations

  • Changsong Lin
    • 1
  • Jingyan Liu
    • 1
  • Shixiang Cai
    • 2
  • Yanmei Zhang
    • 1
  • Ming Lu
    • 2
  • Jie Li
    • 1
  1. 1.China University of GeosciencesBeijingChina
  2. 2.West Nanhai Oil CompanyZhanjiangChina

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