鄂尔多斯盆地韦州煤田构造特征与控煤作用分析  

Structural Features and Coal Controlling Analysis in Weizhou Coalfield,Ordos Basin

作　　者：陈冰凌[1] 李新安 徐勤 

机构地区：[1]中煤航测遥感局遥感应用研究院,陕西西安710054 [2]宁夏回族自治区煤田地质局,宁夏银川750002

出　　处：《中国煤炭地质》2009年第11期7-9,共3页Coal Geology of China

摘　　要：韦州煤田位于鄂尔多斯盆地西缘中段,属石炭—二叠纪煤田,煤炭资源丰富。运用地质力学观点,依据近年来本区研究成果及最新的地震、钻探等地质资料,分析认为:韦州煤田主体构造为一不对称向斜构造,轴向北北西,北端延至区外,南端在下马关附近翘起而收敛,轴部地层由石炭—三叠系组成,向北轴部地层逐渐变新;西翼倾角陡,东翼较缓,向斜内次级断层较发育,造成煤层的重复或断失。The Weizhou coalfield is a Permo-Carbonaceous coalfield in the middle sector of the Ordos Basin west margin and possesses abundant coal resources. Based on geomechanics and up to date seismic prospecting and drilling data, considered that the main structure in the coalfield is a NNW asymmetric syncline and its north end has extended to outside the region, while the upwarping and convergent south end is near the Xiamaguan area. Axial strata belong to Carbonaceous to Triassic systems, stratigraphically getting younger northward, steeply dipping in west limb, gentler in east limb. Secondary faults are well developed in the syncline and thus caused coal seam recurrent or absent.

关 键 词：韦州煤田 鄂尔多斯盆地西缘 逆冲推覆构造 控煤构造 

分 类 号：P618.110.2[天文地球—矿床学]