- 责任者：Cai Xiongfei (Key Laboratory of Geobiology and Environmental Geology ; Ministry of Education ; China University of Geosciences ; Wuhan 430074 ; China) ; Yang Jie
- 刊名：Journal of Stratigraphy
- 出版年：2013
- 卷期：37(3)
- 关键词：震旦纪 ; Sinian ; 贺兰山 ; Helan Mountains
- 页码：p.377-386
- 图表：illus., 2 tables, 10 refs.
- 分类号：1200
- issnNo：ISSN0253-4959
- isbnNo：CN32-1187/P
The upper Sinian Zhengmuguan and Tuerkeng formations in the Helan Mountains have been tra- ditionally interpreted as glacial and deep-water deposits, respectively. Our study of these stratigraphic u- nits at two new sections shows that glacial deposits of the Zhengmuguan Formation were reworked by gravity flows, and that the calcareous cements in the Zhengmuguan Formation were formed subsequently during the deposition of the overlying dolostone and in warm environments. The Tuerkeng Formation ex- hibits significant lithostratigraphic and facies variation. This study shows that the Zhengmuguang and Tuerkeng formations have a complex depositional and diagenetic history that can be unraveled only through careful investigations of temporal and spatial variation patterns.