综合物化探技术在大兴安岭某勘查区的应用

Application of integrated geophysical and geochemical exploration technique in a prospecting area of Greater Khingan Mountains

某勘查区在大兴安岭地区成矿区带划分中属东乌旗—梨于山—鄂伦春华力西期、燕山期铁、铜、钼、金、铅锌、钨成矿带,根据已有地质资料及现场踏勘,发现本区具有很大找矿潜力。本区森林茂盛,地表基岩出露较少,传统找矿方法很难奏效,所以,结合矿区已有地质信息及预测的矿床成因特点,选择土壤化探异常与双频激电中梯扫面相结合的技术进行找矿预测,实践证明其找矿效果较好。

The prospecting area belongs to Dongwuqi--Lizishan--Oroqen metallogenic belt with the Variscan and Yanshan iron, copper, molybdenum, gold, lead, zinc and tungsten. According to the available geological data and field investigation, it is found that this area has prospecting potential. The traditional prospecting method is difficult to use in this area because of the lush forest and the less bedrock exposure. Combining with the available geological information and the feature of ore genesis,the soil geochemical prospecting for anomaly and the dual frequency IP intermediate gradient method were chosen in ore prospecting. It is proved that this method has got good effect.