沉积区—剥蚀区古地貌一体化恢复及古水系研究:以渤海湾盆地辽东东地区馆陶组为例

发布时间：2018-03-05 07:07

本文选题：古地貌　切入点：古水系　出处：《地球科学》2017年11期 　论文类型：期刊论文

【摘要】：古地貌是控制古水系、沉积体系的关键因素之一.以渤海湾盆地渤中坳陷东部的辽东东地区中新世馆陶组为例,对馆陶组的沉积区和剥蚀区分别开展了基于残余地层厚度法和印模法的古地貌恢复,以增进对研究区古水系、源-汇系统的整体认识,为其物源体系、沉积环境、砂体分布的预测提供科学依据.两种方法的古地貌及古水系恢复结果对比研究表明,基于残余地层厚度法的沉积区古地貌恢复结果适用于目的层沉积区古水系的恢复;而基于印模法的沉积区-剥蚀区一体化的古地貌恢复结果实现了剥蚀区、沉积区古水系的统一解释.沉积区-剥蚀区一体化的古地貌恢复弥补了基于沉积区古地貌的古水系恢复中难以判断"源-汇体系"中源区古水系分布及从源到汇古水系派生关系的局限性.
[Abstract]:The ancient landform is one of the key factors to control the ancient water system, sedimentary system. The new world Guantao group as an example in the Bohai Bay Basin in Bozhong depression of Eastern Liaodong in the East, sedimentation and erosion of Guantao were carried out to restore the ancient landform residual stratum thickness method and impression method based on, in order to enhance research on ancient water system, the overall understanding of source sink system, its provenance system, sedimentary environment, and provide scientific basis for prediction of sand body distribution. The ancient landform and the ancient water system of two methods of recovery results comparison results show that the residual stratum thickness method palaeogeomorphology sedimentary area recovery results are applicable to ancient water sedimentary area recovery based on; and the ancient landform deposition area - impression denudation area integration recovery results to achieve the denudation area based on the unified interpretation of ancient water system sedimentary area. Palaeogeomorphology sedimentary area - denudation area integration for recovery based on deposition In the restoration of paleogaeogenic paleogenties, it is difficult to judge the distribution of the source area paleogenal system in source sink system and the limitation of derivation from source to sink and paleogenal system.

【作者单位】：中国石油大学地球科学学院;中国石油大学油气资源与探测国家重点实验室;中国石化胜利油田分公司勘探开发研究院;
【基金】：国家自然科学基金项目(Nos.41172104,41372117,41702104) 国家油气重大专项(Nos.2017ZX05009002,2016ZX05026007)
【分类号】：P531;P736.2

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