层间氧化带砂岩型铀矿的金属活动态异常模式及成矿预测

摘要

In order to accurately determine the spatial position of the interlayer oxidation zone sandstone type uranium deposits , the abnormal formation mechanism of metal active state was discussed based on the metallogenic characteristics,that indicator elements in weak oxidation zone is shown as high anomaly , reduction zone as low anomaly , uranium deposit usually located in the transition between high anomaly and low anomaly .Taking heshi-tuoluogai basin as example , the characteristics of sedimentary facies and uranium source was analyzed , think the Tiechanggou granite in the west side of the study area has good uranium source conditions , uranium transport from south west to north east , and metallogenic prospect area was divided based on anomaly pattern of metal active state .%为了更准确地指示层间氧化带砂岩型铀矿的空间位置，从成矿特点出发探讨了金属活动态的异常形成机制，认为指示元素在弱氧化带为高异常，还原带为低异常，铀矿通常位于高异常向低异常过渡的区间内。以和什托洛盖盆地为例，综合分析了沉积相特征和铀源条件，认为研究区西侧的铁厂沟花岗岩体具备较好的铀源条件，铀元素自南西向北东方向迁移；在此基础上依据金属活动态的异常模式划定了成矿远景区。