一种经济快速追踪Au、Ag异常源的方法

ONE METHOD FOR TRACING SOURCE OF Au-Ag GEOCHEMICAL ANOMALIES ECONOMICALLY AND RAPIDLY

在异常等值线内，从各采样点的元素异常含量，分辩出异常源经过水系时的近源点与远源点，用非等浓度线将这些元素含量各不相同的两类点连成近源区（缩小异常面积１／２至２／３以上），然后在此区内应用土壤电导率法的微电性异常与化探次生异常具有一定同源性的原理，追踪异常源，并用少量化探样品做配合，提供异常出露的位置。

On the abnomalous isopleth, the proximal points and distal points of drainage can be identified from the anomalous contents of elements for each sampling point. The two kinds of sampling points with different contents of elements are connected to form proximal area with nonisopleth( the anomalous area is reduced to 1/2 or 2/3 ). The anomalous source is traced by the principle that microelectrical anomaly is consistent with secondary anomaly in soil electrical conductivity. A few geochemical prospecting samples are combined to locate the anomalous source.