Sedimentary Micro-Facies Characters of Weng’an Biota in Doushantuo Formation, Sinian System in Beidoushan, Weng’an
详细信息
- 责任者：Long Jianxi (Guizhou Academy of Geologic Survey ; Guiyang 550005 ; China) ; Qiao Wenlang
- 刊名：Guizhou Geology
- 出版年：2011
- 卷期：28(3)
- 关键词：震旦纪 ; Sinian ; 陡山沱组 ; Doushantuo Formation ; 沉积微相 ; sedimentary microfacies ; 贵州 ; Guizhou Province
- 页码：p.167-172
- 图表：3 illus., 7 refs.
- 分类号：0803
- issnNo：ISSN1000-5943
- isbnNo：CN52-1059/P
摘要
In this paper, by the field test and sample of Shirenao and Datang section, with the under microscope analyses of association and structure feature of rock, according to edging carbonate rock platform pattern in ’Microfacies Analysis of Limestones’ of Fluget, 8 sedimentary facies types are divided. It reveals the sedimentary micro-facies characters of Weng’an biota in Doushantuo Formation: from bottom to top, the Doushantuo formation experienced three times’ paleogeographic environment of low tidal flat-middle tidal flat-up tidal flat, which the water power altered and the sea water became shallow to the top side.