【作者】 方爱民； 雷家锦； 金奎励； 卢继霞； 侯泉林；

【Author】 Fang Aimin~1,Lei Jiajing~1,Jin Kuili~2,Lu Jixia~2,Hou Quanlin~3 (1.Lithosphere Tectonic Evolution Open Laboratory,Institute of Geology,Academia Sinica,Beijing 100029; 2.Beijing Graduate School,China University of Mining and Technology,Beijing 100083; 3.Earth Systematic Science Center,Graduate School,Academia Sinica,Beijing 100039)

【机构】 中国科学院地质研究所岩石圈构造演化开放实验室； 中国矿业大学北京校区； 中国科学院研究生院地球系统科学中心；

【摘要】 在系统总结西山煤田7号煤层成因标志的基础上,对其成煤植物、成煤环境及其古地理背景、古气候变化进行了综合分析;然后从微观研究的角度出发,对该煤层进行了成因类型的划分,在此基础上,详细划分了该煤层煤相,共划分出6种煤相类型:干燥森林沼泽相;滞流浅覆水森林沼泽相;流动浅覆水森林沼泽相;滞流强覆水森林沼泽相;流动强覆水森林沼泽相以及洪泛沼泽相。此外,对7号煤层煤相类型的垂向分布和演化规律进行了初步分析。更多还原

【Abstract】 On the basis of systematic summary of No.7 coalbed genetic indices of Xishan Coalfield,a synthetical study of coal-forming plant,coal-forming environment and its paleogeographic setting,paleoclimatic change have cairied out.From the microscopic point of view,a genetic classification of the coalbed was made,on this basis,6 coal facies were divided:arid forest bog,stagnant shallow water covered forest bog,flowing shallow water covered forest bog,stagnant deep water covered forest bog,flowing deep water covered forest bog and flooding bog.In addition,the paper has preliminary analyzed the coal facies’ vertical distribution and evolution of the No.7 coalbed.更多还原