staysedimentandcrude oilMany steranes (andSterene）, obviouslyBiologyInSteroid(sterol ）Compounds are transformed.They may come fromanimal(e.g. cholestane)Botany(e.g. ergostane, sitostelane, etc.).It is generally believed thatSteroidNot as important as aquatic animals and plants.Therefore, sediments rich in steranes are generallymarine faciesOrLacustrine faciesOf.Steranes are importantBiomarker, stable at low temperature, can be used forOil sourceContrastdepositional environment And judgmentOrganic matterEvolution degree.[1]
