石油与天然气地质 ›› 1990, Vol. 11 ›› Issue (3): 235-246.doi: 10.11743/ogg19900302

• 论文 • 上一篇    下一篇

黔东、湘西寒武纪碳酸盐重力流沉积

刘宝珺, 叶红专, 蒲心纯   

  1. 成都地质矿产研究所
  • 收稿日期:1989-05-26 出版日期:1990-09-25 发布日期:2012-01-16

CAMBRIAN CARBONATE GRAVITY FLOW DEPOSITS IN GUIZHOU AND HUNAN

Liu Baojun, Ye Hongzhuan, Pu Xinchun   

  1. Chengdu Institute of Geology and Mineral Resources, Ministry of Geology and Mineral Resources
  • Received:1989-05-26 Online:1990-09-25 Published:2012-01-16

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摘要：

黔东、湘西寒武纪碳酸盐重力流沉积,类型多样,其中碎屑流砾屑灰岩是最主要的再沉积碳酸盐岩,发育在扬子碳酸盐台地南部和北部边缘斜坡相,主要为复合支撑,在其流动过程中普遍存在着脉动性或波动性以及流动转化现象。据砾屑灰岩的分布范围、层位变化及旋回特征,表明扬子碳酸盐台地南部边缘,从寒武纪至早奥陶世是向东南推进的,扬子地块南缘已进入地壳变薄下沉的成熟被动大陆边缘演化阶段。

关键词: 碳酸盐重力流, 碎屑流, 寒武纪, 黔东湘西

Abstract:

Cambrian carbonate gravity flows in Guizhou and Hunan are various in kind.Debris flow calcirudite is the main redeposited carbonate developed on the south and north slope of the Yangtze carbonate platform.Pulsation,undulation and flow-trasformation are very common in its flow process.According to the distribution range,horizon variation andcyclic property of the calcirudite,the south margin of the Yangtze carbonate platform generally progradated southeastward from the Cambrian to Early Ordovician,and the Yangtze landmass had reached the evolution stage of matured passive continental margin.