一、矿区地质概况矿区内地层自老至新有:中下泥盆统茅山组石英砂岩;上泥盆统五通组石英砂岩;下石炭统高骊山组砂页岩;下二迭统栖霞组灰岩;下二迭统孤峰组砂页岩;中生代建德亚群火山岩系;第四系湖相沉积层、冲积层及少量山麓堆积。本区除第四系及建德亚群与下伏地层、孤峰组与栖霞组间有明显的不整合外,其余均 First, the mining geology profile Mining area strata from all to new are: the Lower Middle Devonian Maoshan Formation quartz sandstone; Upper Devonian Wutong quartz sandstone; Lower Carboniferous Lislishan sand shale; Lower Permian Qixia group gray Rock; Lower Permian Gushan Formation sand shale; Mesozoic Jiande sub-group volcanic rocks; Quaternary lacustrine sediments, alluvial deposits and a small amount of foothills. In addition to the Quaternary and Jiande sub-group and the underlying strata, Gouxia group and Qixia group obvious unconformity, the rest were