摘要
贵州从江位于我国南华系发育最完整的湘桂黔交界一带,长安组局部地区沉积厚度达1000多米,岩性为块状含砾泥质砂岩为主。通过对从江长安组地层沉积特征的研究,认为长安组块状含砾泥质砂岩中存在大量的水平层理、交错层理和递变层理,说明当时海洋Sturtian冰期在中国南方不发育,海水扰动强烈。
Congjiang of Guizhou is located in the boundary area of Hunan, Guangxi and Guizhou where Nanhua series most developed, the sedimentary thickness of Chang＇ an formation in part area is more than 1000m, the main lithology is massive pebbly sandstone. By study the sedimentary characteristic of Chang＇an formation in Congjiang, it＇ s thought there are abundant horizontal bedding, horizontal bedding and gradational bedding in the massive pebbly sandstone of Chang＇ an formation, it means Sturtian ice age is not developed in China and sea water disturbing is strong.
出处
《贵州地质》
2012年第4期307-312,317,共7页
Guizhou Geology
基金
贵州省国土资源厅社会公益性
基础性项目(201004)
关键词
沉积特征
长安组
南华系
贵州
sedimentary characteristic
Chang＇ an formation
Nanhua series
Guizhou
