饶阳凹陷马西地区沙三中、上亚段层序地层与沉积体系分析
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摘要
综合利用岩心、地质、测井及地震等资料,对饶阳凹陷马西地区古近系沙河街组沙三中、上亚段进行了全面系统的研究。通过高分辨率层序地层学对研究区进行等时地层划分和对比,认为研究区沙三段为一个完整二级旋回,在此二级旋回内部可划分出3个三级旋回。马西地区古近系沙河街组沙三中、上亚段发育有三角洲、湖泊、滩坝和浊积扇等4类沉积体系,分析并介绍了各类沉积体系在该区的亚相类型及其特征,阐述了不同阶段的平面沉积相类型及分布规律,总结了垂向上沉积体系的演化等。
With the data from core,geology,well-logging and seism,this paper studies the middle-upper sections of the third member of Paleogene Shahejie Formation in Ma'xi subsug,and the strata contrast frameworks of cyclic sequence is defined and established.the authors believe 4 types of sedimentary systems were developed in this area in upper-middle sections of the Paleogene Shahejie formation.They are delta,lacustrine,turbidity current and beach bar sedimentary systems.Subfacies and vertical evolution of the depositional systems are discussed in detail.
引文
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