西南石油大学学报(自然科学版) ›› 1990, Vol. 12 ›› Issue (4): 1-9.DOI: 10.3863/j.issn.1000-2634.1990.04.001

• 论文 •    下一篇

川西北地区早中志留世生物礁发育特征初探

张廷山 高卫东 兰光志 强平   

  1. 石由勘探系
  • 收稿日期:1990-01-09 修回日期:1900-01-01 出版日期:1990-11-20 发布日期:1990-11-20

PRELIMINARY STUDY OF DEVELOPMENT CHARACTERISTIC OF ORGANIC REEFS IN EARLY-MIDDLE SILURIAN, NW SICHUAN

Zhang Ting-shan Gao Wei-dong Lan Guang-zhi Qiang Ping
  

  1. Dept. of Geological Exploration
  • Received:1990-01-09 Revised:1900-01-01 Online:1990-11-20 Published:1990-11-20

摘要:

川西北地区早中志留世生物礁,是生活在以陆源沉积物为主的浅海陆棚环境中生屑滩上的点礁,生屑滩的形成为风暴作用所致,其发育受到埋藏反馈作用的影响。大量的陆源物质注入及带入的过剩养料是抑制生物礁发育的主要因素。

关键词: 生物礁, 生物群落, 志留纪, 川西北

Abstract:

Organic reefs in Early-Middle Silvrian, NW Sichuan, are small patch reefs on bioclastic banks in offshore continental shelf environment dominated by terrigenous sediments. The bioclastic banks are formed by storm action. The development of organic reefs is influenced by taphonomic feedback process. The input of massive terrigenous sediments and the excess of terrgenous nutrients are the major factors to control their development.

Key words: Organic reefs, Communities, Silurian, NW Sichuan