安徽东至县桃墅坑铜多金属矿找矿中的物化探特征研究

Study on Geophysical and Geochemical characteristics in Prospecting process of Taoshukeng Cu polymetallic ore in Dongzhi CountyAnhui Province

安徽东至县桃墅坑地区处于下扬子台坳和江南台隆中部的过渡部位,地处有利成矿的大地构造部位,为铜、金多金属矿化提供成矿物质和成矿空间。为了解区内有利成矿部位的地岩层电性差异,不同构造层部位的激电特征,指明赋矿有利地段,开展了相应的激电测量工作。通过收集区内地质背景材料并分析,基于航空磁测和水系沉积物测量成果,结合激电测量资料,取得了一定的成果:初步认为区内铜矿(化)体受南北向构造控制,电性特征表现为低阻高极化。指明了找矿方向和有利找矿部位,为研究区下一步找矿工作提供思路。

Taoshukeng area is located in the transition part between the lower Yangtze platform depression and the central part of the Jiangnan platform uplift in Dongzhi CountyAnhui Province.It is located in a favorable tectonic positionwhich provides ore-forming and metallogenic space for copper and gold polymetallic mineralization.In order to understand the electrical differences of strata in the favorable metallogenic parts of the area and the IP(Induced Polarization)characteristics of different structural layersthe favorable ore bearing sections have been pointed out and the corresponding IP survey is carried out.The geological background is collected and analyzed in the areabased on the results of aeromagnetic survey and stream sediment survey,combined with IP survey datasome results have been achieved in this paper.It is preliminarily considered that the copper(chemical)body is controlled by the North-South structure in the areaand the electrical characteristics are low resistance and high polarization.The prospecting direction and favorable prospecting position are pointed out.It provides ideas for the next prospecting work in the study area.