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自然电位法在清原地区对发现和评价9个红透山式铜锌矿床起了重要作用。但在该区约700km~2范围内同时也发现了许多非矿自电异常,其数量约为矿异常的百倍。这些非矿异常归纳起来有以下几种:(1) 石墨化、黄铁矿化异常;(2)建筑物电场;(3) 工业干扰电场;(4) 过滤电场。建筑物电场、工业干扰电场较易于识别。对石墨化、黄铁矿化电场已有许多著作进行了论述。本文将着重讨论由多金属铜锌矿床引起的矿异常和过滤电场的特点、异常的识别及盲矿的预测。
The natural potential method played an important role in the discovery and evaluation of nine Hongtoushan copper-zinc deposits in the Qingyuan area. However, in the area of about 700km ~ 2, many non-ore spontaneous anomalies were discovered at the same time. The number is about one hundred times that of mine anomalies. These non-mine abnormalities are summed up in the following categories: (1) graphitization, pyrite abnormalities; (2) electric field of buildings; (3) industrial interference electric field; (4) electric field filtration. Building electric field, industrial interference electric field easier to identify. There have been many works on graphitization and pyrite electric fields. This article will focus on the characteristics of the anomalous and filtered electric fields caused by polymetallic copper-zinc deposits, the identification of anomalies and the prediction of blind mines.