新疆三塘湖盆地汉水泉地区中新统昌吉河群砂岩型铀矿成矿条件分析及前景探讨  

Analysis of Metallogenic Conditions and Prospect Exploration of Sandstone Type Uranium Deposits in the Changjihe Group of the Miocene Series in the Hanshuiquan Area of the Santanghu Basin,Xinjiang

作　　者：吴声明 唐湘飞[1,2] 张树新 修相武 何松 Wu Shengming;Tang Xiangfei;Zhang Shuxin;Xiu Xiangwu;He Song(Geologic Party No 216,CNNC,Urumqi,Xinjiang,830011,China;Xinjiang Zhonghe Jushi Mining Co.,Ltd.,Urumqi,Xinjiang,830011,China)

机构地区：[1]核工业二一六大队,新疆乌鲁木齐830011 [2]新疆中和聚石矿业有限责任公司,新疆乌鲁木齐830011

出　　处：《新疆地质》2025年第1期68-78,共11页Xinjiang Geology

基　　金：中国核工业地质局新疆准噶尔盆地及周边地区铀矿资源调查评价与勘查项目(202406);新疆三塘湖盆地铀矿综合编图与选区项目(202205);新疆三塘湖盆地汉水泉地区铀矿资源调查评价项目(202406-4);新疆维吾尔自治区重大科技专项新疆准噶尔铀成矿带成矿规律与勘查增储研究(2024A03003);新疆准噶尔盆地卡姆斯特及外围地区铀矿资源调查评价(202406-3);新疆低工作程度及空白区铀矿资源远景评价(202348-2)项目联合资助。

摘　　要：新疆三塘湖盆地砂岩型铀矿成矿条件比较有利,但工作程度较低。本文通过野外地质调查、钻孔岩心编录、岩矿鉴定、孢粉提取、地球化学分析等综合研究,厘定中新统昌吉河群为汉水泉地区主要找矿目的层。运用层间氧化带砂岩型铀矿成矿理论,从铀源、构造、岩性-岩相、地下水动力系统及后生蚀变等方面分析了汉水泉地区昌吉河群铀成矿条件。认为汉水泉地区昌吉河群受后期构造运动影响较小,产状平缓;目的层由辫状河、辫状河三角洲沉积的厚层砂岩、砂砾岩作为良好的容矿空间,砂体顶底板具稳定泥岩隔水层,具备“泥-砂-泥”的垂向结构,有利于层间氧化带发育,具较好的找矿前景。The metallogenic conditions of sandstone-type uranium deposits in Santanghu Basin of Xinjiang are favorable,but the degree of work is low.Based on the previous work,through field geological survey,drilling core logging,rock and mineral identification,sporopollen extraction,geochemical analysis and other comprehensive research,this paper determines that the Miocene Changjihe Group is the main prospecting target layer in Hanshuiquan area.Based on the theory of interlayer oxidation zone sandstone-type uranium mineralization,the uranium metallogenic conditions of Changjihe Group in Hanshuiquan area are analyzed from the aspects of uranium source,structure,lithology-lithofacies,groundwater dynamic system and epigenetic alteration.It is considered that the Changjihe Group in the Hanshuiquan area is less affected by the late tectonic movement and the occurrence is gentle;the target layer is composed of thick sandstone and glutenite deposited in braided river and braided river delta as a good ore-bearing space.The top and bottom plates of the sand body have stable mudstone aquifuge and have a vertical structure of'mud-sand-mud',which is conducive to the development of interlayer oxidation zone and has a good prospecting prospect.

关 键 词：成矿条件分析 砂岩型铀矿 昌吉河群 三塘湖盆地 

分 类 号：P619.14[天文地球—矿床学]