吉林大学学报(地球科学版) ›› 2019, Vol. 49 ›› Issue (2): 323-345.doi: 10.13278/j.cnki.jjuese.20170302
李媛1,2, 林松1, 林正良3, 马庆林4
Li Yuan1,2, Lin Song1, Lin Zhengliang3, Ma Qinglin4
摘要: 福山凹陷为北部湾盆地南缘海南隆起斜坡上的一个新生代断陷湖盆。本文充分利用岩心、测井以及覆盖整个研究区的高分辨率三维地震资料,以层序地层学、沉积学等多种理论为指导,结合沉积岩石学、地震沉积学等相关技术,于古近系流沙港组SQEls2EST+LST时期,在福山凹陷识别出4种深湖重力流沉积岩相类型;通过岩相组合及其转换特征、砂分散体系、地震相分析,对该时期沉积体系展布特征进行细致剖析,进而建立福山凹陷深湖重力流发育机制和沉积模式:西部地区发育以浊流为主、具有典型浊积水道的湖底扇沉积;而东部地区则以砂质碎屑流沉积形成的远端孤立朵体为主。
中图分类号:
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