金属矿电法勘探中化探资料的利用

电法是寻找金属矿产的重要手段,无论是五十年代就开始应用的“自电”(以及电阻率法),还是六十年代以后广泛开展的“激电”,以及七十年代开始推广的电磁法,在新、老矿区,在地质工作的不同阶段,曾取得了一定的直接或间接的找矿效果。

THE APPLICATION OF GEOCHEMICAL DATA INELECTRICAL EXPLORATION FOR METALLIC ORE DEPOSITS

Electrical and geochemical methods have long been proved to be two important approaches in prospecting for metallic deposits. Considering the presence of both electrical (electromagnetic) fields and geochemical anomalies around the same ore bodies, integrated application of these two methods is expected to enhance the reliability of their interpretation. Inference can be made on the possible mineralization of the source in the light of existence or nonexistence of ore-related geochemical anomalies. Geochemical data can help to identify electrical anomalies caused by such disturbing factors as man-made conductors, topography, water-bearing faults, graphite or pyrite. However, a main problem in the utilization of geochemical information is none other than distinguishing false geochemical anomalies from ore-related ones. The geochemical anomalies related to mafic-ultramafic rocks or geological bodies with high background content can be recognized in terms of their geochemical characteristics.