分析贵州艾家坪—水城地区Pb、Zn化探假异常

Pb,Zn FALSE ANOMALIES IN AIJIAPING-SHUICHENG AREA OF GUIZHOU PROVINCE

贵州艾家坪—水城地区经1∶5万水系沉积物测量化探取样,根据样品测试结果对Pb、Zn进行化探异常圈定,从异常分布特征及结合野外实地取样情况,发现该区有一些化探异常位于以前土法冶炼Pb、Zn的冶炼遗迹上,形成假异常,给以后的化探异常查证增加一定的难度,根据化探异常特征及地质、遥感资料,对形成的假异常进行辨别,从而对下步工作布置提供理论依据。

Pb, Zn geochemical anomalies were delineated on the basis of 1 ： 50000 stream sediment survey. Nevertheless, from the distribution characteristics of the anomalies and field sampling conditions, the authors found that some of the anomalies lie over Pb, Zn smelting ruins produced by local smelting, thus being false anomalies. These false anomalies cause some difficulty in further geochemical anomaly inspection. Based on anomaly characteristics as well as geological and remote sensing data, the authors have distinguished false anomalies from real ones, thus providing a theoretical basis for further exploration arrangement.