地球电化学提取法在高原寒冷区寻找隐伏金矿——以青海格尔木西藏大沟地区为例

Geo-electrochemical extraction method for concealed gold deposits in cold plateau district:a case from Xizang ditch in Geermu,Qinghai

为了在高原寒冷区寻找隐伏矿床,在青海省格尔木市西藏大沟南金矿区已有工程揭露的矿化蚀变的勘探线(00号勘探线)上开展了地电化学提取法寻找隐伏金矿床的可行性研究,并且在已知剖面上对寻找金矿进行地电化学提取法与土壤次生晕法对比研究。结果显示,在已知剖面上地电化学提取法的元素异常明显,且找矿效果优于土壤次生晕法,地电化学提取法在高原寒冷区寻找隐伏金矿体是有效的。对西藏大沟北金矿普查区进行找矿预测,圈定了2个找矿靶区。

In order to find hidden deposits in the cold plateau,a feasibility the study of geo-electrochemical extraction method was carried out in Exploration Line( No. 00) which is located in the south of Xizang ditch,and its mineralized alteration has been exposed by existing works. Moreover on the known section,a comparative study of the method of geo-electrochemical extraction and the secondary halo of soil was made for gold prospecting. The results show that the elements of the geo-electrochemical extraction method are remarkable,and the prospecting effect is better than that of the soil secondary halo method. It is concluded that the method is feasible to find hidden ore deposit in the cold regions of the plateau. It is confirmed that the geo-electrochemical extraction method searching for concealed ore deposits in cold plateau region is effective. Based on the effectiveness of this method,a prospecting research forecast was made in another gold deposit census area in the north of Xizang ditch,and two prospecting targets were searched out.