摘要
在广泛调研前人研究成果的基础上,分析了曾母盆地烃源岩分布和地球化学特征,认为曾母盆地主力烃源岩为渐新统下海岸平原煤系泥岩、煤和下中新统海相泥岩,中中新统为次要烃源岩;烃源岩主要分布于康西坳陷、南康台地和东巴林坚坳陷。原油类型的变化表明生烃凹陷可能存在多种烃源岩相,从西部占主要地位的下海岸平原环境逐步过度为东部的海相环境,陆相原油生烃母质主要为陆源植物的树脂,来自渐新统煤系泥岩;海相原油生烃母质也主要为陆源高等植物,但水生生物输入有所增加。
Based on the extensive investigation of previous studies,the distribution and geochemical characteristics of hydrocarbon source rocks of the Zengmu Basin were analyzed. The results show that most important hydrocarbon source rocks of the basin are Oligocene coastal plain coal shale,coal and lower Miocene marine mudstone. Mid-Miocene source rocks are secondary. The hydrocarbon source rocks are mainly distributed in the Kangxi depression,Nankang platform and east Balinjian depression. The change of crude oil type indicates that there may be a variety of hydrocarbon source rocks facies：From coastal plain environment in the west to the eastern marine environment in the east. Continental oil hydrocarbon generation are mainly terrigenous plant resin from coal and mudstone of Oligocene; whereas marine oil hydrocarbon generation are also mainly terrigenous higher plants with more aquatic organisms input.
出处
《矿物岩石地球化学通报》
CSCD
北大核心
2017年第3期466-475,共10页
Bulletin of Mineralogy, Petrology and Geochemistry
基金
国家科技重大专项课题(2011ZX05025-005)
全国油气资源动态评价项目(2013)
全国油气资源动态评价项目(2015)
关键词
曾母盆地
烃源岩
地球化学
油源
Zengmu Basin
hydrocarbon source rock
geochemistry
oil sources
