The relationship between sedimentary environment and organic matter accumulation in the Niutitang black shale in Zhenyuan, northern Guizhou

被引:0
|
作者
Xia P. [1 ,2 ]
Fu Y. [1 ,2 ]
Yang Z. [1 ,3 ]
Guo C. [1 ,2 ]
Huang J. [1 ,2 ]
Huang M. [4 ]
机构
[1] College of Resource and Environmental Engineering, Guizhou University, Guiyang
[2] Key Laboratory of Karst Geological Resources and Environment, Guizhou University, Guiyang
[3] College of Eco-Environmental Engineering, GuizhouMinzu University, Guiyang
[4] 115 Geological Team, Guizhou Bureau of Geological and Mineral Exploration and Development, Guiyang
来源
Dizhi Xuebao/Acta Geologica Sinica | 2020年 / 94卷 / 03期
关键词
Black shale; Guizhou; Niutitang Formation; Organic matter; Paleoenvironment;
D O I
10.19762/j.cnki.dizhixuebao.2020136
中图分类号
学科分类号
摘要
The mineral composition, major and trace elements, carbon and oxygen isotopes were used to analyze the lithofacies type, as well as sedimentary environments of different lithofacies and their relationship with organic matter accumulation in the Niutitang black shale from the well ZX in Zhenyuan County, northern Guizhou area. The results show that the lower member of Niutitang Formation is mainly composed of siliceous shale with TOC of 4.96%~10.1%, and the upper member is mainly composed of mud-rich siliceous shale with TOC of 1.43%~9.04%. Even though both siliceous shale and mud-rich siliceous shale were deposited in a reducing environment, the sedimentary environment of siliceous shale was more reductive than that of the mud-rich siliceous shale. In this study area, oxygen-deficient reducing environment has a stronger influence on organic matter enrichment than hydrothermal action and terrigenous detrital content. © 2020, Science Press. All right reserved.
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页码:947 / 956
页数:9
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