标题：The geologic settings of Chinese coal deposits
作者：Li, Zengxue; Wang, Dongdong; Lv, Dawei; Li, Ying; Liu, Haiyan; Wang, Pingli; Liu, Ying; Liu, Jianqiang; Li, Dandan
作者机构：[Li, Zengxue; Wang, Dongdong; Lv, Dawei; Liu, Haiyan; Wang, Pingli; Liu, Ying; Liu, Jianqiang; Li, Dandan] Shandong Univ Sci & Technol, Coll Earth Sci 更多
通讯作者：Li, ZX;Wang, DD
通讯作者地址：[Li, ZX; Wang, DD]Shandong Univ Sci & Technol, Qingdao 266590, Shandong, Peoples R China.
来源：INTERNATIONAL GEOLOGY REVIEW
关键词：Coal-forming sedimentary environments; coal-forming processes;; coal-bearing strata; coal-forming periods; China
摘要：China has abundant coal resources, which are extensively developed in marine-influenced, continental, and transitional environments. The coal-bearing strata in China have complicated geneses and distributions. There were eight major coal-forming periods in China, namely the Terreneuvian, Mississippian, Pennsylvanian-Cisuralian-Guadalupian, Lopingian, Late Triassic, Early-Middle Jurassic, and Early Cretaceous Epochs, as well as the Palaeogene-Neogene Periods. The distributions of the coal-bearing strata formed during these different coal-forming periods displayed obvious regional and regularity characteristics. In accordance with their plate-tectonic settings and coal-bearing characteristics, the coal-bearing basins in China can be divided into six types. The coal-bearing basins that were formed during the Palaeozoic Era were mainly large epicontinental sea basins. During the early Palaeozoic Era, the shallow sea was the most important coal-forming sedimentary environment. In addition, coastal delta and delta-detrital coast systems were the most important coal-forming sedimentary environments in the late Palaeozoic Era. The coal-bearing basins that were formed during the Late Triassic Epoch were mainly offshore basins, and coastal, coast-delta, coastal alluvial, and coastal inter-mountainous plain environments dominated their coal-forming sedimentary environments. Coast-bay and lagoon-estuary systems comprised additional main coal-forming sedimentary environments. The coal-bearing basins that formed during the Early-Middle Jurassic Epochs were large- and medium-sized inland lake basins, in which alluvial-lake delta systems recorded the best coal formation processes, followed by lakeshore sedimentary environments. The coal-bearing basins that formed during the Early Cretaceous Epoch and Palaeogene-Neogene Periods were mainly small-sized continental basin groups. Coal-forming processes mainly occurred in the lake-delta swamp environments during lake siltation stages when the filling evolution of the lake basins occurred. In addition, this study proposed a new coal-forming process that occurs during transgression events. Finally, this study generally summarized the characteristics and evolution theories of coal-forming processes in China and especially focused on the characteristics of the evolution of coal-forming sedimentary environments.