Strata of the Late Mesozoic in the North of Qiangtang Basin: A Discovery of the Early Cretaceous Marine Strata
详细信息
- 责任者：Zhu Lixia (Institute of Geology and Mineral Resources ; Chengdu 610081 ; China) ; Tan Fuwen
- 刊名：Acta Sedimentologica Sinica
- 出版年：2012
- 卷期：30(5)
- 关键词：早白垩世 ; Lower Cretaceous ; 羌塘盆地 ; Qiangtang Basin
- 页码：p.825-833
- 图表：4 illus., 1 table, 21 refs.
- 分类号：1200
- issnNo：ISSN1000-0550
- isbnNo：CN62-1038/P
摘要
To confirm the existence of the Early Cretaceous marine sediments in the Qiangtang Basin,this paper conducted a research on Shenglihe-Tuonamu region. The results show that original Suowa Formation is in the Late Jurassic-Early Cretaceous,Suowa formation is in the Late Jurassic,Weimingming Formation is in the Early Cretaceous,and Xueshan Formation is in the late Early Cretaceous-early Late Cretaceous.The formation comparison shows that the era which was initially judged as Late Jurassic-Early Cretaceous shale limestone-gypsum marine strata should be Early Cretaceous.This stratum is oil shale and the thickest in Shenglihe-Changsheshan region,which gradually becomes thinner along the east and transits into shale sediment,and into limestone sediment in the west.Regionally,the existence of the Early Cretaceous strata is important to the conditions of the underlying oil and gas storage.
© 2004-2018 中国地质图书馆版权所有 京ICP备05064691号 京公网安备11010802017129号 地址：北京市海淀区学院路29号 邮编：100083 电话：办公室：(+86 10)66554848；文献借阅、咨询服务、科技查新：66554700 |