平庄盆地北缘六家立井地区铀成矿条件分析  

Uranium Metallogenic Condition Analysis in Liujia Vertical Shaft Area,Pingzhuang Basin Northern Margin

作　　者：郑翠 霍超 张恒利 韩晓宙 贺军 Zheng Cui;Huo Chao;Zhang Hengli;Han Xiaozhou;He Jun(Exploration and Research Institute,CNACG,Beijing 100039)

机构地区：[1]中国煤炭地质总局勘查研究总院,北京100039

出　　处：《中国煤炭地质》2020年第2期74-78,共5页Coal Geology of China

基　　金：国家973项目(2015CB453000);中国地质调查局地质调查项目(12120115012201)联合资助。

摘　　要：平庄盆地属于沽源—红山子铀成矿带,为进一步评价盆地北缘的铀成矿潜力,选取该地段六家立井地区为研究对象,区内白垩系阜新组上段为主要含铀矿层,其埋深适中、发育“泥-砂-泥”地层结构、砂体发育、含砂率高,具备铀成矿基本条件。基于以往煤田钻孔资料“二次开发”在铀矿勘查中的应用,结合钻孔原位验证成果,对六家立井地区岩性、岩相、构造、铀源、水文地质等铀成矿条件进行了系统分析研究。结果表明阜新组上段有较好的铀异常分布,展现了较好的铀找矿前景,建议下一步工作向六家立井地区东部和东北部有针对性外推,扩大找矿线索。The Pingzhuang Basin is situated in the Guyuan-Hongshanzi uranium metallogenic belt.To further assess uranium metallogenic potential in the basin’s northern margin,the Liujia vertical shaft area is selected as a subject investigated.The Cretaceous Fuxin Formation upper member in the area is a main uranium-bearing ore bed with medium buried depth,has developed“mud-sand-mud”stratigraphic structure;sand mass well developed with high sediment charge,thus possess basic conditions to uranium metallogenesis.Based on previous coal drilling data reused on uranium ore exploration application,combined with borehole in situ validation results,carried out systematic analysis and study on lithology,lithofacies,structure,uranium source and hydrogeology etc uranium metallogenic conditions in Liujia vertical shaft area.The result has shown that Fuxin Formation upper member has better uranium anomalies distribution,showing better uranium prospecting prospect.Thus proposed the next prospecting should be targeted outward advancing from Liujia vertical shaft area to its east and northeast,to expand prospecting handholds.

关 键 词：铀成矿 阜新组上段 六家立井 平庄盆地 

分 类 号：P619.14[天文地球—矿床学]