甘肃三道明水盆地白垩系砂岩型铀矿成矿模式与找矿方向  

The metallogenic model and prospecting target of the Cretaceous sand-type uranium deposits in the Sandaomingshui basin,Gansu provicne

作　　者：任文秀[1,2] 刘子锐 王怀涛[1,2] 马永东[1] REN Wen-xiu;LIU Zi-rui;WANG Huai-tao;MAYong-dong(Geological Survey of Gansu Province,Lanzhou 730000,China;School of Earth Sciences,Lanzhou University,Lanzhou 730000,China)

机构地区：[1]甘肃省地质调查院,兰州730000 [2]兰州大学地质科学与矿产资源学院,兰州730000

出　　处：《地质调查与研究》2018年第1期60-66,共7页Geological Survey and Research

基　　金：中国地质调查局地质调查项目"甘肃省明水盆地铀矿资源调查项目(12120115015801)"

摘　　要：以煤田钻孔资料"二次开发"作为铀矿勘查新思路,择优选取三道明水盆地收集的煤田放射性异常孔进行原位钻孔验证,通过验证结果对比分析,认为三道明水盆地铀矿化可能为层间氧化带和潜水氧化带复合型铀矿化。结合该盆地的成矿地质条件,初步建立了该盆地砂岩型铀矿的成矿模式,根据该模式又探讨了两个靶区的找矿方向,为在该盆地继续开展砂岩型铀矿找矿工作提供了新思路。Using the new idea of employing the data of coalfield drilling for second-round development of uranium resources,we verified key coal anomaly drill holes.Through comparison and analysis of the verification results,we believe that uranium mineralization in the basin is a composite uranium mineralization between phreatic oxidation zone and interlayer oxidation zone.Combining with the metallogenic geological conditions,we have preliminarily established the metallogenic model of sandstone type uranium deposits in the basin.According to its metallogenic model,the prospecting direction of two target areas is discussed in this paper,which provide new ideas for continuing to carry out sandstone-type uranium ore prospecting work in the basin.

关 键 词：三道明水盆地 白垩系 砂岩型铀矿 成矿模式 找矿方向 

分 类 号：P619.14[天文地球—矿床学]