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Sequence stratigraphy, paleogeography, and coal accumulation regularity of major coal-accumulating periods in China

查看全文 作　　者：Longyi [1]Shao;Xuetian [1]Wang;Dongdong [1,2]Wang;Mingpei [1,3]Li;Shuai [1]Wang;Yingjiao [1]Li;Kai [1,4]Shao;Chao [1]Zhang;Caixia [1]Gao;Daxiao [1]Dong;Aiguo [5]Cheng;Jing [1]Lu;Congwei [1]Ji;Di [1,6]Gao 高影响力作者 机构地区：[1]State Key Laboratory of Coal Resources and Safe Mining,College of Geoscience and Surveying Engineering,China University of Mining and Technology(Beijing),Beijing 100083,China;[2]College of Earth Science and Engineering,Shandong University of Science and Technology,Qingdao 266590,Shandong,China;[3]Innovation Technology Research Institute of Shaanxi Investment Group Co.,Ltd.,Xi'an 710061,Shaanxi,China;[4]Shaanxi Coalbed Methane Development Company Limited,Xi'an 710119,Shaanxi,China;[5]China National Administration of Coal Geology,Beijing 100039,China;[6]College of Resources and Environment,Henan Polytechnic University,Jiaozuo 454003,Henan,China高影响力机构 出　　处：《International Journal of Coal Science & Technology》索引2020年第7卷第2期,共23页高影响力期刊 基　　金：This research was supported by the Project for the Survey of Land and Resources in China(1212010633901);National Natural Science Foundation of China(Grant No.41572090)。 摘　　要：There are 9 major coal-accumulating periods during geological history in China,including the Early Carboniferous,Late Carboniferous-Early Permian,Middle Permian,Late Permian,Late Triassic,Early-Middle Jurassic,Early Cretaceous,Paleogene and Neogene.The coal formed in these periods were developed in different coal-accumulating areas(CAA)including the North China,South China,Northwest China,Northeast China,the Qinghai–Tibet area,and China offshore area.In this paper,we investigated depositional environments,sequence stratigraphy,lithofacies paleogeography and coal accumulation pattern of five major coal-accumulating periods including the Late Carboniferous to Middle Permian of the North China CAA,the Late Permian of the South China CAA,the Late Triassic of the South China CAA,the Early-Middle Jurassic of the North and Northwest China CAA,and the Early Cretaceous in the Northeast China CAA.According to distribution of the coal-bearing strata and the regional tectonic outlines,we have identified distribution range of the coal-forming basins,sedimentary facies types and coal-accumulating models.The sequence stratigraphic frameworks of the major coal-accumulating periods were established based on recognition of a variety of sequence boundaries.The distribution of thick coals and migration patterns of the coal-accumulating centers in the sequence stratigraphic framework were analyzed.The lithofacies paleogeography maps based on third-order sequences were reconstructed and the distribution of coal accumulation centers and coal-rich belts were predicted. 关 键 词：Coal-accumulating period Coal-accumulating area Sequence stratigraphy PALEOGEOGRAPHY China
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