贝南凹陷古地形对层序结构及沉积充填的控制  

Control of Paleo-morphology to Sequence and Sedimentary System in South Beir Depression

作　　者：纪友亮[1,2] 蒙启安[3] 曹瑞成[3] 张革[3] 

机构地区：[1]中国石油大学(北京)资源与信息学院,北京102249 [2]同济大学海洋学院,上海200092 [3]中国石油大庆油田勘探开发研究院,黑龙江大庆163114

出　　处：《同济大学学报（自然科学版）》2009年第11期1541-1545,共5页Journal of Tongji University:Natural Science

基　　金：国家"九七三"重点基础研究发展计划资助项目(2006CB202302)

摘　　要：根据对贝南凹陷的盆地边缘的古地形、古地貌的结构特征的分析,将贝南凹陷白垩纪发育的古构造坡折带划分为5种类型,分别控制5种类型沉积体系的形成和分布.断崖型坡折带控制着近岸水下扇沉积体系的形成和分布;陡坡型坡折带控制着扇三角洲及前方的远岸湖底扇体系的形成和分布;断阶型坡折带控制着斜坡扇沉积体系的形成和分布;缓坡型坡折带控制着扇三角洲沉积体系的形成和分布;在基准面下降阶段,盆内坡折控制着远岸湖底扇的形成和分布.According to the analysis of the configuration of paleogeomorphology and paleotopography of the margine of South Beir Depression, the paleo slope break belt of South Beir Depression during the development of cretaceous is divided into 5 types which control the formation and distribution of 5 types of sedimentary system. The faulted scarp type controls the development of near shore sub-aqueous fan system. The steep slope type controls the development of fan-deltas and near sublake fan system. The faulted terrace type controls the development of slop fan system. The gentle slope type controls the development of fan delta system. In basin-level falling stage, the shore sublacustrine fan system is developed on inner basin types of break in-slop.

关 键 词：古地形 基准面 地层层序 坡折带 贝南凹陷 

分 类 号：TE121.3[石油与天然气工程—油气勘探]