塔里木盆地下寒武统底部高熟海相烃源岩中有机质的赋存状态

于炳松; DongHailiang; 陈建强; 陈晓林; 梁世友; 林畅松

Volume 29 Issue 2

Mar. 2004

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Article Navigation > Earth Science > 2004 > 29(2): 198-202

YU Bing-song, Dong Hailiang, CHEN Jian-qiang, CHEN Xiao-lin, LIANG Shi-you, LIN Chang-song, 2004. Occurrence of High Mature Organic Matter in Marine Black Shale Source Rocks of Lower Cambrian from Northern Tarim Basin, China. Earth Science, 29(2): 198-202.

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Occurrence of High Mature Organic Matter in Marine Black Shale Source Rocks of Lower Cambrian from Northern Tarim Basin, China

1.
Key Laboratory ofLithospheric Tectonics Deep-Level Process and Exploration, China University ofGeosciences, Ministry ofEducation, Beijing 100083, China
2.
Department ofGeology, Miami University, Oxford, OH 45056, USA

Received Date: 2003-09-02
Publish Date: 2004-03-25

Abstract

Abstract

More and more evidences indicate that the organic matter (OM) in immature organic-rich sediments and sedimentary rocks is chemically absorbed onto the external surfaces of minerals and into interlayer (internal) surfaces of smectitic clay minerals in the form of amorphous molecular scale carbon OM. But there are few reports about the occurrence of high mature OM in marine black shale petroleum source rocks. This paper studies the occurrence of high mature OM in the black shale of basal Cambrian from the northern Tarim basin. Based on the comprehensive analysis of total organic carbon contents (TOC), maximum thermolysis temperatures (T_max) of OM, mineral surface areas (MSA), scanning electronic microscope (SEM) and transmission electronic microscope (TEM) of the black shale, it concludes that the high mature OM in the marine black shale of the basal Cambrian from the basin occurs in the state of particulates ranging from 1 to 5 microns in diameter. The contrast of the existing state of the high mature OM in the black shale with that of the immature one in the modern marine continental margin sediments has brought some scientific problems, which are valuable to study in detail.
- marine black shale petroleum source rock,
- occurrence of high mature organic matter,
- Tarim basin

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References(19)

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