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对于在地质地理情况复杂、面积较大区域的化探异常提取,传统方法存在着自身固有的弊端。本文试图采用地质子区异常下限衬值法对藏东八宿地区进行化探异常提取。该方法从地质背景出发,由地质背景到地球化学背景,对不同地质单元采用不同的异常下限进而提取化探异常。该方法在藏东八宿地区进行了初步应用,效果较好。
For the abnormal extraction of geochemical exploration in areas with complicated geology and geography and large area, the traditional method has its inherent drawbacks. This paper attempts to use geophysical anomaly lower limit line method to carry out geochemical anomalies in Bazu area of eastern Tibet. Based on the geological background, from geologic background to geochemical background, this method uses different lower limits of anomalies for different geologic units to extract geochemical anomalies. The method has been initially applied in Baxu area of eastern Tibet and has good effect.