冀北苏家店火山盆地铀成矿多源信息分析及远景预测  

Multi-source information analysis and prospect prediction of uranium mineralization in Sujiadian Volcanic Basin,north Hebei Province

作　　者：高天栋[1] 郭恒飞 姜山[1] 王之晟 GAO Tiandong;GUO Hengfei;JIANG Shan;WANG Zhisheng(Geologic Party No.243,CNNC,Chifeng 024000,Inner Mongolia,China)

机构地区：[1]核工业二四三大队,内蒙古赤峰024000

出　　处：《矿产勘查》2023年第6期962-973,共12页Mineral Exploration

基　　金：中国核工业地质局铀资源调查评价项目(201933-4)资助。

摘　　要：苏家店火山盆地位于沽源—红山子铀成矿带的南部,为一发育于古元古代变质花岗岩基底之上的中生代火山塌陷盆地,具有基底+盖层的二元地层结构,基底经历多期次的改造后成熟度高、富铀,中生代盖层以张家口组中酸性火山岩为主,铀含量普遍较高;线性断裂与火山构造相互叠合交汇,次火山岩多沿火山环状构造侵位,有利于成矿热液的运移、富集,显示出良好的铀成矿条件。通过对物化遥多源信息剖析梳理,并且对比成矿带内典型铀矿床,认为苏家店火山盆地具备良好的铀找矿潜力,并圈定出了3处铀成矿远景区,为下一步工作提供找矿依据。The Sujiadian Volcanic Basin is located in the southern part of Guyuan-Hongshanzi uranium metal⁃logenic belt.It is a Mesozoic volcanic collapse basin developed on the Paleoproterozoic metamorphic granite base⁃ment.After the multi-stage reformation,the maturity is high and uranium-rich.The Mesozoic caprock is mainly composed of medium-acid volcanic rocks in the Zhangjiakou Formation,and the uranium content is generally high;linear faults and volcanic structures overlap and intersect with each other,and the sub-volcanic rocks are mostly along the volcanic ring structure.Emplacement is conducive to the migration and enrichment of ore-forming hydrothermal fluids,showing superior uranium metallogenic conditions.By analyzing and sorting out the physicochemical remote multi-source information and comparing the typical uranium deposits in the metallogenic belt,it is believed that the Sujiadian Volcanic Basin has great potential for uranium exploration,and three uranium metallogenic prospective areas are delineated,which provides a basis for the next step prospecting.

关 键 词：铀成矿条件 多源信息 铀成矿远景区 苏家店火山盆地 冀北 

分 类 号：P619.14[天文地球—矿床学]