【摘要】 本文对塔里木盆地东南断陷区侏罗系的生油岩和含油砂岩进行了地球化学特征研究。侏罗系陆相生油岩，其母质来源以陆源高等植物为主，演化程度低；含油砂岩其母质来源以低等水生生物为主；原油成熟度高。研究表明，侏罗系含油砂岩其源岩为古生代的海相生油岩。更多还原

【Abstract】 In this paper,the studies of geochemical characteristics on both the Jurassic sourcerocks and oil-bearing sandstones in the fault depression of the southeast Tarim basin havebeen carried out.It is suggested that the kerogens of the Jurassic source rocks mainly comefrom nonmarine higher plants with low evolutionary level while those of the Jurassic oil-bearing sandstones derived from lower hydrobios with high maturity of crude oil. There-fore,it is revealed the source rocks of the Jurassic oil-bearing sandstones should be at-tributed to Paleozoic marine source rocks.更多还原