土壤化探在漠河盆地南缘找矿实践中的应用

Application of Soil Geochemical Exploration in the Southern Margin of Mohe Basin

优选漠河盆地南缘1∶5万水系沉积物测量异常较好地段开展了1∶2万土壤测量,并择优进行了工程揭露,以期在寻找有色金属矿产方面有所突破。结果表明:铅、锌、钼等矿化较好,地表可圈出数条矿体,为在该区找矿提供了靶区和方向;铅、锌等元素的土壤化探浓集中心与水系沉积物浓集中心基本套合,显示了运用土壤地球化学方法在水系沉积物圈定异常的基础上寻找铅锌等有色金属的有效性和可靠性;已发现的铅、锌、钼矿体走向受光华组流纹岩和中元古代片麻杂岩接触带的控制。同时也说明了土壤地球化学测量方法在该地区寻找有色金属矿产的效果十分明显。

Based on the results of 1 ： 50 000 stream sediment survey, good anomaly area is locked out in the southern margin of Mohe basin, where the 1 ： 20 000 soil geochemical exploration work is carried on, and then the preferential areas are revealed so as to find the breakthrough in exploring nonferrous metal mineral. The results show that, the mineralization of lead, zinc and molybdenum are good,and several lead, zinc and molybdenum ore bodies can be confirmed. It provides the prospecting target area and direction. Soil geochemical concentration center and sediment concentration center of lead, zinc and other ele- ments basically fit with. It is shown that, based on the anomalous stream sediment in this area, the soil geochemistry method for searching nonferrous metals is effective and reliable, such as lead, zinc and so on. lead, zinc, molybdenum ore bodies that have been found, are controlled by the contact zone of Guanghua group rhyolite and middle Proterozoic gneissic complex rock. It also proves that the method of soil geochemical exploration is effective in prospecting nonferrous metals in this area.