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yi shu di qian xia di san xi chen ji ti xi te zheng ji qi you qi kan tan yi yi
Author(s): 
Pages: 55-62
Year: Issue:  1
Journal: Oil & Gas Geology

Keyword:  辫状河三角洲湖底扇油气勘探伊舒地堑;
Abstract: 辫状河三角洲体系和湖底扇体系,构成了伊舒地堑下第三系最主要的粗粒碎屑沉积体系。它们以短轴方向搬运一沉积为主。盆地不对称双断导致沉降和沉积中心偏向于主断裂一侧,而辫状河三角洲体系则在缓坡一侧发育。辫状河三角洲体系作为地堑中的重要储集岩、它的发育与横向构造,如横向断层、断价、边坡以及基底凸起等构造单元有密切关系,因此,它们是油气勘探的重要靶区。
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