Comparative study of biomarkers and carbon isotopes of coal-measure source rock in Jiyang depression

Li Zheng; Li Juyuan; Xu Xingyou; Lin Wu; Wang Ru

doi:10.11743/ogg20060516

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Comparative study of biomarkers and carbon isotopes of coal-measure source rock in Jiyang depression
Vol. 27, Issue 5, Pages: 696-701(2006)
Online First：25 October 2006，

Published：2006
DOI： 10.11743/ogg20060516
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DOI：

Li Zheng, Li Juyuan, Xu Xingyou, et al. Comparative study of biomarkers and carbon isotopes of coal-measure source rock in Jiyang depression[J]. 2006, 27(5): 696-701. DOI： 10.11743/ogg20060516.

摘要

在系统分析和总结大量烃源岩分析数据的基础上

对济阳坳陷石炭一二叠系和中生界两套煤系烃源岩的生物标记化合物参数与碳同位素特征进行了详细的对比

对比结果显示石炭-二叠系煤系烃源岩干酪根、族组成碳同位素大于中生界坊子组;生物标记化合物中

石炭-二叠系煤系烃源岩与中生界坊子组相比具有更强的植烷优势、更高的γ蜡烷含量和更高的C

胆甾烷含量

表明石炭-二叠系煤系烃源岩有机质的生成环境、母质组成及保存条件优于中生界。

Abstract

A detaile comparative study is performed on the biomarkers and the carbon isotopes of two sets of coal-measure source rocks in Permo-Carboniferous and Mesozoic in Jiyang depression based on a systemic analysis of large amount of source rock data.Compared with the Mesozoic Fangzi Formation the coal measures source rock in Permo-Carboniferous is larger in stable carbon isotope of kerogen and group composition

higher in contents of gammacerane and C

sterane

and lower in ratio of Pr/Ph

indicating a better environment for hydrocarbon generation

composition of parent materials

and preservation condition.