高原寒冷区地电化学方法寻找隐伏铜多金属矿研究——以青海尕大阪矿区为例  

Application of the Geoelecto-chemical Method to Prospecting Hidden Copper-polymetallic Ore in Cold Plateau Areas:A Case Study of the Gardaban Mine in Qinghai Province

作　　者：黄学强[1,2,3] 罗先熔[1,2,3] 李彦伟[1,2,3] 王振东[1,2,3] 卢安宁[1,2,3] 黄蔚阁[1,2,3] 

机构地区：[1]桂林理工大学地球科学学院,广西桂林541004 [2]广西地质工程中心重点实验室,广西桂林541004 [3]桂林理工大学隐伏矿床研究所,广西桂林541004

出　　处：《地质与勘探》2012年第2期344-351,共8页Geology and Exploration

基　　金：国家深部探测计划项目:盆地地电化学测量技术(项目编号:201011055-2);广西研究生教育创新计划资助项目(2011105960709M04)资助

摘　　要：为了尽快突破高原寒冷区寻找隐伏矿难题,选取青海尕大阪矿区开展地电化学方法找矿示范及预测研究。在测区内已知剖面开展示范研究,结果显示,在已知矿体上方集中测出了明显的地电提取Cu、Pb、Zn等元素异常及土壤离子电导率异常。基于示范研究成果,在矿区东南部开展隐伏矿预测研究,并圈定有利找矿靶区4处。通过本次研究可知,高原寒冷景观条件下地电化学有两个特征:隐伏矿的氧化溶解是有限的,电化学溶解则是主要的溶解类型;活动态离子在垂直方向的迁移能力大于水平方向。两个特征亦是地电化学方法在本区示矿效果明显的重要原因。Abstract： In order to solve difficuhies in searching hidden deposits in cold plateau regions, the Gardaban mine of Qinghai Province was chosen for the site to conduct geoelectro-ehemical surveys and deposit prediction. The result shows that clear anomalies of elements Cu, Pb, and Zn and soil ionic conduc- tivity were found directly above the known orebodies. Based on this result, a deposit prospect study was conducted in the southeast of the mine area, and 4 favorable targets were determined. In addition, this study indicates two distinguishing characteristics of geoelectro-chemistry in cold plateau regions： （ 1 ） oxidizing solution of the hidden ore is limited, and geochemical solution dominates ; （2） transport ability of active ions in vertical direction is stronger than that in horizontal direction. Both of the characteristics are the principal reasons for the marked success of the geoelectro-ehemical method in ore search in this region.

关 键 词：高原寒冷区 地电化学 隐伏矿 青海尕大阪 

分 类 号：P632[天文地球—地质矿产勘探]