贵州铜仁卜口—松桃地区铅锌矿找矿方向分析

铜仁卜口—松桃地区地处湘—黔铅锌成矿带南段铜仁境内,大地构造位于上扬子地台南部被动边缘雪峰基底逆冲过渡带。区内铅锌矿床(点)分布受区域上大断裂铜仁—保靖深大断裂带与江口—松桃—花垣(湘)断裂所夹持,矿床(点)均沿早寒武世龙王庙期碳酸盐台地边缘相藻灰岩丘体分布。根据该区内1∶20万化探Pb、Zn异常,铅矿物重砂异常,含矿地层分布及沉积相等成矿指示标志,将研究区划分为3个找矿远景区,分别为嗅脑铅锌找矿远景区、牛郎铅锌找矿远景区、卜口场铅锌找矿远景区。

Analysis on prospecting direction of lead-zinc deposit in Tongrenbukou-Songtao area,Guizhou

Tongren Bukou-Songtao property is located within Tongren District of southern Xiang-Qian lead-zinc mineralization belt.In the view of tectonic structure, the property belongs to the transition zone of southern part of the Yangtze platform. The distribution of lead-zinc deposit is controlled by the reginal Tongren-Baojing large fault and Jiangkou-Songtao-Huayuan(Xiang)large fault. All of deposits distribute along the algal limestone locating along the edge of carbonate platform of early Cambrian Longwangmiao period. According to the 1:2 million geochemical Pb and Zn anomalies and placer abnormal in lead mineals,the metallogenic indicators such as ore-bearinglayer distribution and depositional facies and so on,the author has divided the reaserch area into three prospecting targets,namely rhinencephalic, Niulang and Bukouchang Lead-zinc targets.