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《Earth Science》 2016-10
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The Sedimentary Characteristics and Evolution Law of Trassic,Luoyi District

Yue Shaofei;Wang Hua;Yan Detian;Huang Chuanyan;Chang Dayu;Li Xiaopeng;Zhang Jing;Zhanjiang CNOOC China Ltd.;Faculty of Earth Resources,China University of Geosciences;Henan Oilfield Company,SINOPEC;  
By using the data of core,well logging and outcrop,the sedimentary characteristics and evolution law of Triassic system,Luoyi District are studied.It is found that there are three sedimentary facies including meandering river,delta and lacustrine developed in Triassic period.The middle and lower Triassic system mainly developed meandering river,while the upper Triassic system developed delta and lacustrine sedimentary facies along with the expansion of the lake area and the rising of the lake surface.The evolution law of sedimentary system is controlled by the Indosinian movement during middle Triassic.This movement caused the Yangtze plate to subduct to the North China plate,uplifted the surrounding of Luoyi District and made the sedimentary of deep-water lake in Luoyi District.By contrasting the sedimentary characteristics and stratigraphic trap of Luoyi District with those of Ordos basin,the exploration potential of Luoyi District is proved.The study of the sedimentary characteristics and evolution of Luoyi District provides more favorable geological evidences for the future exploration in the region.
【Fund】: 国家十二五科技重大专项(No.2011ZX05009-002);; 国家自然科学基金项目(No.40903032)
【CateGory Index】: P618.13
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