青海木里煤田构造格局与煤盆地构造演化  

Structural Framework and Coal Basin Tectonic Evolution in Muri Coalfield,Qinghai

作　　者：孙红波[1] 孙军飞[1] 张发德 曹代勇[1] 

机构地区：[1]中国矿业大学煤炭资源与安全开采国家重点实验室,北京100083 [2]青海省煤炭地质勘察院,青海西宁810002

出　　处：《中国煤炭地质》2009年第12期34-37,共4页Coal Geology of China

基　　金：煤炭资源与安全开采国家重点实验室自主研究课题(SKLCRSM08B01);青海省煤炭资源潜力评价课题

摘　　要：木里煤田属中祁连断隆带的一部分,煤田的构造格局总体呈NWW向展布的拗褶带。由于受近SN向地应力的作用,区内断层以NW、NWW向为主,受其影响,煤田在南北方向上呈带状、东西方向上呈段状展布,各煤矿点在平面上呈现出NWW向的带状分布。木里煤田盆地构造演化与整个祁连地区构造事件变化紧密相关,从燕山晚期的挤压抬升变形开始,经历了古近纪早喜山运动,挤压变形加剧,以及新近纪以来的晚喜山构造运动,最终形成了现今木里煤田南北分带、东西分段的区域构造格局。The Muri coalfield is located in the middle part of the Qilian faulted uplift zone, as a whole, the structural framework of the coalfield is a NWW trend depression/fold zone. Because of the effects of the NS-trending ground stress, most faults in the area are NW and NWW trending, the shape of the coalfield presents belts from north to south, segments from east to west, and coalmine locations present a NWW zonal distribution. The coal basin tectonic evolution is closely related to the tectonic events in the whole Qilian area. Start from compressive lifting during the late Yanshanian stage, experienced the Paleogene Period Himalayan movement intensifying compressive deformation, then the late Himalayan movement since the Neogene Period, finally formed present Muri coalfield structural framework of belts from north to south, segments from east to west.

关 键 词：木里煤田 煤田构造格局 构造演化 

分 类 号：P618.110.2[天文地球—矿床学]