中文摘要：

理论和实践均表明,在层间氧化带砂岩型铀矿上可观测到自然电位异常,并且可用自然电位法寻找、确定层间氧化带前锋线,判断铀成矿矿化发育方向等。以我国南疆某地区的砂岩铀矿床作为研究背景,对研究区层间氧化带砂岩铀矿床的地下水水化学、水文地球化学特征进行了研究。在新疆某地进行了自然电位方法野外试验,试验数据成果很好地确定了层间氧化带前锋线,对层间氧化带砂岩铀矿体的位置准确定位、轮廓规模都有明显地反映。在未布设钻孔区域,用自然电位方法推断了铀矿体的存在位置,为下一步钻探详勘工作提供了准确、高价值的信息。

英文摘要：

Both theory and practice show that the SP anomaly can be observed on sandstone-type uranium deposit in interlayer oxidation zone.The SP can be used to explore and determine the front line of interlayer oxidation zone and distinguish uranium mineralization development direction.Based on study on a sandstone-type uranium deposit in China＇s southern region,the characteristics of groundwater hydrochemistry and hydrogeochemistry of sandstonetype uranium deposit in interlayer oxidation zone are researched.The results of the test data from a field trial by SP method at somewhere in Xinjiang have indicated the front line of interlayer oxidation zone distinguished uranium mineralization position and outline.The position of uranium ore body is inferred by SP method in the area without drilling.This conclusion will provide accurate and high value of information to further detailed prospecting work.