双频激电在内蒙中部地区矿产评价中的应用

针对工作区地表干燥、基岩裸露、电极接地和供电比较困难等因素，采用双频激电中梯装置方法工作。根据圈定的激电异常组合特征，对激电异常进行了分类和综合解释推断，区分出矿（化）体和含炭质地层干扰异常，以此确定地表工程揭露位置。工程揭露结果与激电异常的解释结果基本一致，说明在一定的条件下，利用激电异常的展布及组合特征区分矿与非矿是可行的。

APPLICATION OF DUAL-FREQUENCY IP TO ASSESSMENT OF MINERALS IN THE MIDDLE PART OF INNER MONGOLIA

In consideration of some impact factors of arid surface and outcrops of bedrocks, difficulties of earth connection between electrodes and power supply in the study area, the central gradient array method of dual-frequency IP （induce polarization） method was used in this area. According to the composed features of delineated IP anomalies, classification and comprehensive interpretation of the IP anomalies have been made for distinguishing the interference anomalies from the metallogenic （mineralized） bodies and carbonaceous beds to determinate the positions for surface exploration. The results obtained by geological exploration and interpretation of the IP anomalies are almost the same in delineation of metallagenic bodies and non-mineralized bodies, based on the distribution and the composed features of IP anomalies under some conditions.