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沾化凹陷断坳转换期层序地层及沉积特征

Xinjiang Petroleum Geology(2007)

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Abstract
沾化凹陷古近纪沙二上-东营组沉积期处于断坳转换期。综合分析认为可将其划分为3个长期旋回和6个中期旋回,发育冲积扇、河流、三角洲、辫状河三角洲、扇三角洲、滨浅湖、滩坝、半深湖-深湖和湖底扇等各种沉积相类型。其中有利储集砂体的分布主要集中在C1、C2及C4旋回。沉积体系的分布受基底沉降、断层活动、物源区特征以及气候等因素的综合影响。
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Key words
sequence stratigraphy,Zhanhua sag,sedimentary response,falult-depression transform period
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