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

作　　者：Longyi Shao Xuetian Wang Dongdong Wang Mingpei Li Shuai Wang Yingjiao Li Kai Shao Chao Zhang Caixia Gao Daxiao Dong Aiguo Cheng Jing Lu Congwei Ji Di Gao 

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

出　　处：《International Journal of Coal Science & Technology》2020年第2期240-262,共23页国际煤炭科学技术学报（英文）

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 

分 类 号：P53[天文地球—古生物学与地层学] P61[天文地球—地质学]