生物标志化合物在湖泊环境的应用研究

Application of Biomarker Compound in Lake Environment

陆相烃源岩发育在湖盆内,古时湖泊的水体性质及沉积环境是影响烃源岩发育质量的重要因素,分子化石(生物标志物)作为历史遗存下的产物,更能准确科学地表现古湖泊环境的变化。通过介绍姥鲛烷与植烷、C35升藿烷、重排甾烷/甾烷和伽马蜡烷4个具有环境指示意义的生物标志物参数,确定其都与湖泊沉积环境相关,可以反映古湖泊水体的化学性质,对它们的生物来源,成岩过程、与古环境的关系进行了研究述评。

The continental source rocks were nearly deposited in lake environment.Properties of water and depositional environment were important factors that deeply influence the quality of source rocks.The depositional environment of paleo-lake could be analyzed with multiple technologies nowadays,biomarkers as the object appeared in primeval lakes and well preserved were more precise and scientific to embody the changes of depositional environment of paleo-lakes.Four biomarkers reflecting the deposiontional environment are introduced and the their origins,the diagenetic process and the correlation with depositional environment are described in detail.