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标题：EXPERIMENTAL STUDY ON THE SOURCE ROCKS OFCAMBRIAN SHOALBULAK FORMATION IN TARIM BASIN,CHINA
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作者：Nan Wu ; Bokai Dai ; Jian Wang 等
期刊名称：Fresenius Environmental Bulletin
印刷版ISSN：1018-4619
出版年度：2020
卷号：29
期号：9A
页码：8402-8409
语种：English
出版社：PSP Publishing
摘要：The Cambrian Shoalbulak Formation is the most important source layer in the Tarim Basin. It is well exposed in the Keping Uplift in the northwestern Tarim Basin. In order to study (he geochemical characteristics and sedimentary environment of the Yuertuss source rocks, we conducted a systematic geochemical analysis of the source rock samples of Sugetbulak profile and Well Shen 5 in Keping area. The results show that (he TOC content of the Shoalbulak Formation outcrop samples in the Keping area is high and the biomarkcr compounds arc abundant. The analysis results of element ratio, chloroform asphalt MAM component content, kerogen carbon isotope content and biomarkers show that the source rock of the Shoalbulak Formation is mainly type II kerogen. The type of kerogen is related to palco productivity and deposition conditions. The calculated results of the equivalent vitrinite reflectance and the characteristics of the biomarker compound match the higher maturity of the source rock. The source rock is mainly marine carbonate rock, and its dcpositional environment is the marine salinity reduction environment with medium salinity.
关键词：Source rock;sedimentary environment;geochemical characteristics;Keping Uplift;Cambrian