青海省泽库县尼马龙卡地区化探异常剖析及找矿潜力分析

尼马龙卡地区位于泽库弧后前陆盆地,区内晚三叠世花岗闪长岩与古浪提组接触带具备热液型金、钨矿成矿地质条件。近年来通过在该区开展1：5万区域地质矿产调查工作,发现了多个化探异常,在水系沉积物异常中心通过1：1万土壤地球化学测量进一步圈定了化探异常。W、Bi、Mo、Au、Ag、As等化探异常明显,元素相关性好,通过对重点化探异常进行验证,发现了较好的找矿线索。土壤地球化学异常中心及北东向构造破碎带具有较大的找矿潜力。

Geochemical Characteristics and Prospecting Potential in Nimalongka,Zeku County,Qinghai Province

Nimalongka area is located in Zeku back-arc foreland basin. The contract zone of the late Triassic granodiorite and Gulangti group has ore-forming geological factors of the epithermal gold deposit and tungsten ore. In recent years,several geochemical anomalies were found by carrying out regional geological and mineral resources survey at 1： 50000 in this area. Further geochemical anomalies through 1： 10000 pedogeochemical anomalies were found in the center of stream sediment anomaly. W,Bi,Au,Ag,As and other geochemical anomalies are obvious and the correlation of these elements is very good. A better clue of prospecting by verifying key geochemical anomalies have been found. The center of pedogeochemical anomalies and the NE-trending tectonic fracture zone have a large exploration potential.