川中-蜀南地区上二叠统龙潭组煤层赋存特征及沉积环境  

Occurrence Characteristics and Sedimentary Environment of Coal Strata in Upper Permian Longtan Formation in Central-Southern Sichuan Basin

作　　者：吴百一 林小兵[1,2] 明盈 王兴 高康 彭顺风 WU Baiyi;LIN Xiaobing;MING Ying;WANG Xing;GAO Kang;PENG Shunfeng(State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation,Chengdu University of Technology,Chengdu 610059,China;Institute of Sedimentary Geology,Chengdu University of Technology,Chengdu 610059,China;Research Institute of Petroleum Exploration and Development,Petro China Southwest Oil and Gas Field Company,Chengdu 610000,China;Chengdu Analytical and Testing Center,Sichuan Bureau of Geology and Mineral Resources,Chengdu 610081,China)

机构地区：[1]油气藏地质及开发工程国家重点实验室(成都理工大学),成都610059 [2]成都理工大学沉积地质研究院,成都610059 [3]中国石油西南油气田分公司勘探开发研究院,成都610000 [4]四川省地质矿产勘查开发局成都综合岩矿测试中心,成都610081

出　　处：《煤炭技术》2022年第6期75-78,共4页Coal Technology

摘　　要：通过野外露头研究、钻井资料分析结合镜下薄片研究,在川中-蜀南地区龙潭组识别出煤层、泥晶灰岩、生屑灰岩、粉砂质泥岩、灰质泥岩、碳质泥岩、泥质粉砂岩等岩石类型。煤层与围岩组合类型可划分砂-泥-灰-煤互层型和泥页岩夹煤层型。龙潭组沉积相主要为滨岸、潮坪沉积,早-中期,泥炭坪的分布范围较大,晚期灰坪在研究区东部普遍发育。By means of field outcrop, drilling data combined with microscopic thin section, coal beds,micrite limestone, bioclastic limestone, silty mudstone, calcareous mudstone, carbonaceous mudstone and argillaceous siltstone had been identified in the Longtan formation in the central-southern Sichuan basin. Meanwhile,the occurrence state of coal-bearing strata can be divided into sandstone-mudstonelimestone-coal interbed type and shale-coal interbed type. Sedimentary facies of the Longtan formation are mainly coastal and tidal flat. The peat flats had a large distribution, while the limestone flats were generally developed in the eastern part of the study area.

关 键 词：煤系地层 岩性组合 沉积环境 龙潭组 川中-蜀南地区 

分 类 号：P618.13[天文地球—矿床学]