【摘要】 通过对甘肃金川南延、吉林红旗岭不同覆盖区地电化学提取法定量、定性及应用对比研究发现,虽然该方法在干旱岩屑覆盖区提取的离子量很少,但其找矿效果与湿润厚覆盖区基本相同,能客观反映元素的地球化学性质差异及成矿作用引起的元素来源差异。对比研究发现该方法能强化元素异常,一定程度上能放大异常效果,并在两矿区均圈定出多个Ni、Cu异常带。因此,在原生晕和次生晕异常较弱的地区,地电提取法更能达到其它常规探测方法意想不到的找矿效果。更多还原

【Abstract】 We have made a comparative study of quantitative and qualitative analysis and application of the geoelectro-chemical extraction method in different overburden areas in southward extension of Jinchuan in Gansu province and Hongqiling in Jilin province. We found that this method extracted very few ions in arid areas covered with debris,but the prospecting effect was almost the same as that in moist areas covered with thick overburden. And this method could show objectively differences of geochemical characters and original differences produced by mineralization. The comparative study discovered that this method can strengthen the anomalies,and enlarge prospecting effect to a certain extent. In addition we delineated several nickel and copper anomaly zones in these two areas. Therefore the geoelectro chemical extraction method can achieve unexpected prospecting effect compared with other detection methods in areas with weak anomalies of primary halo and secondary halo.更多还原