甘肃金川南延铜镍硫化物矿床物化探综合找矿研究

Research on Geophysical and Geochemical Exploration for Prospecting Copper-Nickel Sulphide Deposits in South Jinchuan,Gansu Province

为了缓解甘肃金川镍矿资源枯竭问题,实现资源的可持续发展,由高精度磁测法、大功率瞬变电磁法、地电化学法(包括地电化学提取、土壤离子电导率)和土壤吸咐相态汞测量法等组合综合找矿方法,在金川南延地区开展物化信息寻找隐伏镍矿预测研究。结果表明,高精度磁测法对金川南延地区超基性、基性岩体的圈定起到很好的指导作用,大功率瞬变电磁法和地电化学法组合的应用效果明显,能准确指示隐伏岩体的埋藏深度和性质,地电化学方法在干旱岩屑覆盖区起到很好的示矿效果。

Nickel resource is of great importance in the sustainable development of national economy.This paper conducts a predicting research on seeking the potential Nickel Ores in the southern area of Jinchuan through the combination of methods such as High Accuracy Magnetic Prospecting,TEM,CHIM and the method of measuring the adsorbed mercury in the surface soil,with the aim to alleviate the situation of extremely scarce resources in our country and to lower the risks of exploration.The combined methods are applied into this area,and provide instructions on the identification,buried depth and characteristics of hidden rocks.Besides,it indicates the CHIM method has a better effect in identifying the ore body among the cover regions of dry rock waste.