石油与天然气地质 ›› 1992, Vol. 13 ›› Issue (2): 147-154.doi: 10.11743/ogg19920203

• 论文 • 上一篇    下一篇

四川华蓥山涧水沟上二叠统生物礁

王生海, 强子同   

  1. 西南石油学院 四川 南充 637001
  • 收稿日期:1990-02-18 出版日期:1992-06-25 发布日期:2012-01-16

UPPER PERMIAN JIANGSHUIGOU REEF IN UAYING MOUNTAINS,SICHUAN

Wang Shenghai, Qiang Zitong   

  1. Southwest Petroleum Institute, Nanchong, Sichuan
  • Received:1990-02-18 Online:1992-06-25 Published:2012-01-16

PDF (PC)

483

被引次数

94

摘要：

涧水沟生物礁是华蓥山地区上二叠统发育较好的礁体之一。由钙质海绵、水螅、Tabulozoa 和古石孔藻构成造礁生物。根据生物与环境的依存关系,分出7个生物群团,根据生物含量的统计分析分出8个生物群落,并描述了礁体中的水成岩墙、沟道沉积和古溶洞沉积。碓体的消亡与二叠纪末的生物大绝灭同时发生,因此华蓥山地区上二叠统生物礁是晚古生代层位最高的礁体。

关键词: 生物礁, 沉积特征, 生物群团, 生物群落, 上二叠统, 华蓥山

Abstract:

Jiangshuigou reef is one of well developed Upper Permian reefs in the Huaying Mountains.The reef-building organisms are calcareous sponges,hydrozoans,tabulozoans and Archeolithoporella etc.The development of the reef can be divided into two main cycles and each of them contains three stages,that is,stabilization,colonization and diversion.Eight communities and seven guilds have been established according to fossil assemblage.The abundant vadose silts and dissolved caves filled with oolites and pellets indicate that the reef had been exposed several times during its development.The eustasy was the ex-ternal factor that controlled the development of the reef,while the ecological evolution of the organisms was the internal factor.The extinction of the reef-building organisms was related to the mass extinction of organisms between Permo-Triassic boundary.So the reefs in the Huaying Mountains are the highest ones in the Paleozoic.