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通过对塔里木盆地古生界地层的沉积岩石学、有机地球化学、有机岩石学以及测井地质学等的综合研究，发现在满加尔凹陷南北斜坡带及柯坪露头区发育的中上奥陶统泥灰岩、泥页岩具有有机质丰度高（ＴＯＣ ０．５％～５．５４％）、有机成熟度适中（ＶＲＥ０.８％～１．３％）的特点，且具有一定的厚度分布。这套源岩的发育主要受上升洋流引起的高有机生产力带的控制，其生烃母质的构成具有浮游和底栖植物双重性。根据三芳甲藻甾烷和２４－降胆甾烷等具有特殊生源和时代意义的生物标志物的油－岩对比分析和生烃史分析结果，证实目前在台盆区发现的工业性油流主要来源于这套地层。
Through the comprehensive study of sedimentary petrology, organic geochemistry, organic petrology and logging geology in the Paleozoic strata in the Tarim Basin, it is found that the Upper-Middle Ordovician developed in the north-south slope zone and Keping outcrop area in the Manjar Sag Mudstone and shale have the characteristics of high organic matter abundance (TOC 0.5% ~ 5.54%) and moderate organic maturity (VRE 0.8% ~ 1.3%), and have certain thickness distribution. The development of this source rock is mainly controlled by the high organic productivity zone caused by the rising ocean current. The composition of the hydrocarbon generating parental material has the characteristics of planktonic and benthic plants. According to the oil-rock contrast analysis and hydrocarbon generation history analysis of biomarkers with special biological and epoch-making significance, such as trifiuomethine and 24-norcholestane, it is confirmed that the industrial oil flow currently found in the basin area is mainly From this formation.