华北克拉通南缘中条山地区汝阳群沉积特征与层序地层分析  

Sedimentary characteristics and sequence stratigraphic of Ruyang group in Zhongtiaoshan area in south margin of north China Craton

作　　者：张严 罗顺社[3,4] 吕奇奇[1,2] 王铜山 詹贵斌[1] Zhang Yan;Luo Shunshe;Lyu Qiqi;Wang Tongshan;Zhan Guibin(School of Geosciences,Yangtze University,Wuhan,Hubei 430100,China;State Key Laboratory of Petroleum Resources and Prospecting,China University of Petroleum(Beijing),Beijing,102249,China;Laboratory of Exploration Technologies for Oil and Gas Resources of Ministry of Education,Yangtze University,Wuhan,Hubei 430100,China;Hubei Cooperative Innovation Center of Unconventional Oil and Gas,Wuhan,Hubei 430100,China;Research Institute of Petroleum Exploration and Development,Beijing 100083,China)

机构地区：[1]长江大学地球科学学院,湖北武汉430100 [2]中国石油大学(北京)油气资源与探测国家重点实验室,北京102249 [3]长江大学油气资源与勘探技术教育部重点实验室,湖北武汉430100 [4]长江大学非常规油气湖北省协同创新中心,湖北武汉430100 [5]中国石油勘探开发研究院,北京100083

出　　处：《东北石油大学学报》2018年第6期22-31,122,共11页Journal of Northeast Petroleum University

基　　金：国家科技重大专项(2016ZX05004-001);油气资源与探测国家重点实验室开放课题(PRP/open-1804)

摘　　要：为建立山西永济中条山地区汝阳群层序地层格架,分析沉积特征和演化规律,建立沉积模式;根据野外露头剖面观察与实测资料、铸体薄片资料及露头层序界面的识别,利用沉积学理论研究汝阳群沉积环境和层序特征,阐述各层序的相互关系及海平面变化特征。结果表明:山西永济中条山地区汝阳群为障壁型海岸陆源碎屑岩沉积体系、碎屑岩和碳酸盐岩混合沉积体系,发育障壁型海岸相、混积滨岸相、浅海陆棚相3种沉积相类型,识别3种亚相及6种微相;汝阳群划分为6个三级层序,体系域由海侵体系域和高位体系域组成;白草坪组和北大尖组沉积体系分布受控于物源和相对海平面的变化;发育碎屑岩障壁型海岸沉积和混合沉积两种相模式。To establish the sequence stratigraphic framework of the Ruyang group in the Zhongtiaoshan area in Yongji,Shanxi province,clarify sedimentary and evolutionary characteristics and form a reasonable sedimentary model,research was performed on the sedimentary environment and sequence characteristics of Ruyang group in the study area using sedimentology theory based on the observation and measurement of field outcrops,thin section data and the identification of outcrop sequence boundary.The characteristics,relationship and responses to eustatic sea-level change of each sequence have been stated systematically,and the sequence stratigraphic framework and sedimentary model are established.The result shows that the sedimentary system belongs to the tidal plat in barrier island and mixing deposits of clastic-carbonate.There are three types of sedimentary facies:barrier-type coastal facies,mixed coastal facies and shallow shelf facies,and three subfacies and six microfacies are identified.The Ruyang group was divided into six third-order sequences whose depositional systems tract is composed of transgressive systems tract and highstand systems tract and the distribution of sedimentary systems in Baicaoping formation and Beidajian formation are controlled by provenance and relative sea level changes.Finally,two facies models of barrier type coastal sedimentation and mixed sedimentation are established.

关 键 词：华北克拉通 中条山地区 中—新元古界 汝阳群 沉积相 层序地层 

分 类 号：TE122.1[石油与天然气工程—油气勘探] P534.3[天文地球—古生物学与地层学]