北羌塘盆地侏罗系布曲组烃源岩地球化学特征及意义  

Geochemical characteristics and significance of hydrocarbon source rocks in the Jurassic Bi Qu Formation in the north Qiangtang basin

作　　者：陈文彬[1] 廖忠礼[1] 张予杰[1] 彭智敏[1] 

机构地区：[1]中国地质调查局成都地质矿产研究所,四川成都610082

出　　处：《中国地质》2007年第5期927-934,共8页Geology in China

基　　金：国家油气专项"青藏高原油气资源战略选区调查与评价"(XQ-2004-06)资助。

摘　　要：布曲组海相碳酸盐岩是北羌塘盆地发育的重要的烃源岩之一。笔者从有机质丰度、有机质类型、有机质成熟度,尤其是生物标志物特征等方面揭示了北羌塘盆地侏罗系布曲组烃源岩地球化学特征。研究结果表明,该烃源岩的发育环境为海相还原环境,有机质母质主要为低等水生生物为主兼有一定高等植物的输入,有机质热演化程度高,处于高成熟阶段。Marine carbonate rocks of the Bi Qu Formation are one of the most important hydrocarbon source rocks in the North Qiangtang basin. This paper reveals the geochemical characteristics of the source rocks on the basis of the abundance, types and maturity of organic matter, and especially biomarker analysis. The results show the following： hydrocarbon source rocks occurred in the reducing environment, the organic source material is mainly lower aquatic plants mixed with some higher plants, and the organic matter of the hydrocarbon source rocks has a high degree of thermal evolution and is at a high maturity stage.

关 键 词：烃源岩 地球化学 布曲组 北羌塘盆地 

分 类 号：P618.13[天文地球—矿床学]