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兰坪坳陷三叠系源岩地球化学特征
海洋石油
2004年 24卷 第3期
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Title
Geochemical Characteristics of Triassic Source Rock in Lanpin Depression
Authors
CHANG Xiang-chun
GUO Hai-hua
单位
山东科技大学 地球信息科学与工程学院, 山东 泰安 271019
Organization
College of Geo-info Science and Engineering, SUST, Taian 271019, China
摘要
通过兰坪坳陷三叠系烃源岩可溶组分族组成、碳同位素、饱和烃馏份生物标志物、岩石热解等方面的综合对比和研究表明,该套源岩有机质丰度中等,有机质类型以Ⅱ型有机质为主,沉积环境水体盐度较高,热演化处于成熟早期,属于中等-较好生油岩。
Abstract
nalysis and evaluation of Triassic source rock was conducted in terms of soluble constituents, carbon isotope, biomarkers of saturate hydrocarbons and rock pyrolysis. The results indicate that source rock was characterized by typical low maturity and belonged to medium to good source rock with medium abundance of organic matters. The types of organic matters were predominantely Ⅱ-type. The sedimentary environment was reducing with high salinity. Thermal evolution was at the early stage of mature.
关键词：
可溶组分;
生物标志物;
碳同位素;
岩石热解;
地球化学;
Keywords:
Soluble constituent;
biomarker;
carbon isotope;
rock pyrolysis;
geochemistry;
基金项目
国家攀登计划地质流体项目资助(编号95-预-39-3)
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