二连盆地哈达图铀矿床覆盖区地球化学异常源示踪与判别  

Tracing and Distinguishing Geochemical Anomalous Sources in Coverage Area of Hadatu Uranium Deposit of Erlian Basin

作　　者：康欢[1] 陈岳龙[1] 李大鹏[1] 徐云亮 房明亮 KANG Huan;CHEN Yuelong;LI Dapeng;XU Yunliang;FANG Mingliang(School of Earth Sciences and Resources,China University of Geosciences,Beijing 100083)

机构地区：[1]中国地质大学(北京)地球科学与资源学院

出　　处：《铀矿地质》2019年第6期351-358,共8页Uranium Geology

基　　金：中华人民共和国科技部国家重点研发项目“穿透性地球化学勘查技术”（编号:2016YFC0600604）资助

摘　　要：隐伏砂岩型铀矿地表土壤具有活动态铀含量、氡及其子体放射性活度等异常。通过对二连盆地哈达图铀矿内不同铀品位见矿钻孔和无矿钻孔上方的表层土壤分别进行活动态铀、氡及其子体测量,并利用SPSS软件对测试数据进行显著性检验,结果显示:高品位钻孔上方表层土壤瞬时氡浓度明显高于无矿孔,两组瞬时氡含量差异明显(P<0.05),结合地质特征综合分析认为该参数可作为揭示深部隐伏铀矿体的重要参数;相反,不同品位见矿钻孔、无矿钻孔上方的表层土壤活动态铀和210Po含量无明显差别,难以成为预测深部隐伏铀矿体的有效参数。Previous studies have found that there are anomalies of mobile-state uranium,radon and its daughter radioactivity in the surface soil above the concealed sandstone-type uranium deposits.In this paper,the mobile forms of uranium,specific activity of radon and its daughter in surface soil were measured in different-grade ore-bearing borehole and non-mineralization borehole areas of Hadatu sandstone-type uranium deposit in the Erlian Basin,the significances of the data are tested by SPSS software.Results showed that the surface soil instantaneous radon concentration in the high-grade borehole area is significantly higher than that in the non-mineralization borehole area,and the difference between two sets of data is obvious(P<0.05),which may be directly related to the deep concealed sandstone-type uranium deposits.On the contrary,there is no significant difference in the surface soil mobile-state uranium and210 Po contents in the ore-bearing and non-mineralization borehole areas,which means that it difficult to use the two parameters for predicting the deep concealed uranium bodies.

关 键 词：隐伏铀矿床 活动态铀 氡及其子体 显著性检验 二连盆地 

分 类 号：P619.14[天文地球—矿床学] P632[天文地球—地质学]