近年来发现的指示输入到石油和沉积岩中的陆生植物和非海相物质的生物标记化合物的数量与日俱增。这些标记化合物大多数是特定类型陆生植物的有用指标,但是,没有一种标记化合物具有广泛的适用性。而且,由于缺乏海相标记化合物,因此主要根据不存在非海相标记化合物作为海相来源成熟地质类脂质的指示。本文报导了海相石油和海相成因沉积岩的类脂质中含有C_(30)甾烷(4-去甲基,结构1),及 The number of biomarker compounds discovered in recent years that indicate both terrestrial and non-marine substances that are imported into petroleum and sedimentary rocks is increasing. Most of these marker compounds are useful indicators of terrestrial plants of a particular type, however, none of the marker compounds have broad applicability. Moreover, due to the lack of marine-labeled compounds, it is primarily based on the absence of non-marine-labeled compounds as an indication of the mature geological lipid of marine origin. This paper reports that the C_ (30) steranes (4-demethyl, structure 1) in the lipids of marine petroleum and marine facies sedimentary rocks, and