雪峰山西侧陡山沱期沉积凹陷对优质烃源岩的控制摘要（中、英文）雪峰山西侧地区是否存在着制约优质烃源岩分布的生烃凹陷？通过对沉积相和沉积环境的研究，是否存在制约烃源岩分布的沉积环境？通过对雪峰山西侧陡山沱期的沉积环境研究，通过剖面对比，地层连井对比等手段，了解雪峰山西侧沉积环境，绘制岩相古地理图，探寻制约烃源岩分布的因素。研究表明雪峰山西侧陡山沱期的沉积序列充填受前震旦纪古地理格局的影响巨大。陡山沱期的沉积构造大致以恩施为界，分为恩施以西地区的古隆起地区和恩施以东的边缘凹陷地区。陡山沱组沉积时期由于古地貌和海侵作用的影响，雪峰山西侧不同地区的沉积环境和所沉积的岩性不同。陡一段主要沉积滨岸相，斜坡相和浅海陆棚相的白云岩，泥质白云岩沉积，陡二段主要为深海陆棚相的黑色炭质泥岩，页岩沉积，陡三段主要沉积碳酸盐台地相沉积，陡四段主要为深水海盆沉积。烃源岩的分布受沉积环境的影响较大，主要沉积于古陆之间的鄂西海槽等边缘凹陷地带的陡二段和陡四段黑色炭质泥岩，页岩之中，有机质丰度高，成熟度高。烃源岩的分布受边缘凹陷的控制明显，鄂西海槽等古陆边缘凹陷地区是有利的油气勘探地区。关键词：震旦系;陡山沱组；岩相古地理；边缘凹陷；烃源岩Control of high quality source rocks in doushantuo sedimentary depression on the west side of xuefeng mountainAbstract: Are there hydrocarbon producing depressions that restrict the distribution of high quality source rocks in the west of xuefeng mountain? Based on the study of sedimentary facies and sedimentary environment, is there a sedimentary environment that restricts the distribution of source rocks? By studying the sedimentary environment of doushantuo period on the west side of xuefeng mountain, understanding the sedimentary environment on the west side of xuefeng mountain, drawing lithofacies and paleogeography map and exploring the factors restricting the distribution of source rocks by means of section comparison and stratigraphic well correlation. The study shows that the sedimentary sequence filling of doushantuo period on the wes...
