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石门杨家坪早寒武世的沉积环境
石油与天然气地质
1993年 14卷 第No.4期
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Title
SEDIMENTARY ENVIRONMENTS OF EARLY CAMBRIAN AT YANGJIAPING, SHIMEN
作者
郭成贤
朱忠德
胡明毅
胡爱梅
孟宪富
李相明
Authors
Guo Chengxian
Zhu Zhongde
Hu Mingyi
Hu Aimei
Meng Xianfu
Li Xiangming
摘要
湖南石门杨家坪下寒武统存在两种沉积组合:其一由正常原地沉积、重力流沉积组成深水沉积组合;其二以牵引流为特征的浅水沉积组合。从早至晚由深海盆地→盆地边缘→台地前缘斜坡、台地边缘浅滩→潮坪构成一个由深变浅的沉积序列。
Abstract
Two sedimentary complexes developed in the Lower Cambrian at Yangjiaping,Shi-men,Hunan Province.The first is a deep-water association constituted by marine au-tochthonous deposits and gravity flow deposits.The second is a shellow-water association constituted by tractive current deposits and algal stromatlite deposits.According to the se-quence of the section,it is concluded that the Early Cambrian from early to late period underwent the evolution process of deep sea basin→basin margin→platform foreslope→shallow beach→tidal flat,and formed a sedimentary sequence from deep to shallow water.
关键词：
沉积环境;
沉积序列;
早寒武世;
杨家坪;
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