重庆地区须家河组含煤地层沉积环境及聚煤规律  

Sedimentary Environment and Coal Accumulation Pattern of Xujiahe Formation in Chongqing Area

作　　者：杨明显[1,2] 李大华[1,2] 

机构地区：[1]外生成矿与矿山环境重庆市重点实验室重庆地质矿产研究院,重庆400042 [2]煤炭资源与安全开采国家重点实验室重庆研究中心,重庆400042

出　　处：《中国煤炭地质》2011年第9期9-13,共5页Coal Geology of China

基　　金：国家重点基础研究发展计划(2006CB202202);重庆市国土资源和房屋管理局科研项目共同资助

摘　　要：晚三叠世须家河组沉积期是重庆地区的重要成煤期。通过对须家河组含煤地层沉积环境的分析,认为区内须家河组厚度由东南向西北逐渐增大,主要发育河流冲积平原、湖滨-三角洲及湖泊沉积体系,具有工业价值的煤层主要形成于须家河组一段、五段和七段的湖滨-三角洲沉积体系中。最有利的聚煤中心分布于达州—开江—梁平以及永川—荣昌两个区域。The Late Triassic Epoch Xujiahe age is an important coal-forming period in the Chongqing area.After coal-bearing strata sedimentary environment analysis of the Xujiahe Formation,considered that the thickness of the formation is increasing from southeast to northwest,mainly fluvial plain,lakeshore-deltaic and lacustrine sedimentary systems have been developed.Coal seams with commercial value are mainly formed in the first,fifth and seventh members of Xujiahe Formation lakeshore-deltaic sedimentary system.Optimistic coal accumulation centers have been distributed in the Dazhou-Kaijiang-Liangping and Yongchuan-Rongchang two areas.

关 键 词：须家河组 含煤地层 沉积体系 聚煤中心 重庆地区 

分 类 号：P618.11[天文地球—矿床学]