新疆三塘湖盆地砂岩型铀成矿前景及新区找矿思路

THE ANALYSIS OF URANIUM MINERALIZATION PROSPECTS OF SANTANGHU BASIN IN XINJIANG AND THE DISCUSS OF NEW IDEA IN NEW AREAS

总结了历年来在三塘湖盆地开展的铀矿地质工作成果,分析了盆地找矿工作中找矿方法的适用性.通过对盆地铀成矿条件分析,认为侏罗系在乌通凹陷和淖毛湖凹陷边缘发育小规模层间氧化带,因后期构造运动复杂,层间氧化带发育时间短,仅形成零星铀异常.古近—新近系昌吉河群在汉水泉地区发育4层具规模的层间氧化带,但由于砂岩缺少还原剂等因素,仅形成少量异常和矿化,目的层不具备形成规模铀矿化的条件.在铀矿地质工作程度较低的盆地开展层间氧化带砂岩型铀矿找矿工作应当注意以下3个方面:①前期地面物化探方法要与钻探工作相配合;②钻探查证阶段在面上要拓展,关键区要布钻;③尽快加密重点地段.

This paper summarizes the results of uranium geology work in the Santanghu Basin over the years,alalysis the adaptability of the methods used in the prospect of the basin. And through the analysis of uranium mineralization conditions in the basin,the author think that Jurassic Developed small-scale layer oxidation zone in wutong and Naomaohu Depressions, as the result of later complicated tectonic activity, Layer oxidation zone development time is short, only formed sporadic uranium anomalies;the changji river group of Tertiary developed oxidation zone in Hanshui string area,however, due to the factors such as the lack of Reducing agent in sandstone,which formed only a small number of anomalies and mineralization.Designated layeres Do not have the conditions of forming a certain scale uranium mineralization.