准噶尔盆地南缘侏罗系辫状河沉积体系与铀成矿关系  

Relationship Between Jurassic Braided River Depositional System and Uranium Mineralization in the Southern Margin of Junggar Basin

作　　者：王国荣[1] 贾为卫 杜默[1] 黄松 鲁克改[1] 孙潇[1] WANG Guorong;JIA Weiwei;DU Mo;HUANG Song;LU Kegai;SUN Xiao(Geologic Party No.216,CNNC,Urumqi,Xinjiang 830011,China)

机构地区：[1]核工业二一六大队,新疆乌鲁木齐830011

出　　处：《铀矿地质》2021年第3期342-354,共13页Uranium Geology

基　　金：中国核工业地质局全国铀矿资源调查评价计划项目“新疆准噶尔盆地及周边地区铀矿资源调查评价与勘查”(编号:201906)资助。

摘　　要：文章通过野外地质调查、室内测试分析,结合砂体沉积构造及剖面特征,分析了准噶尔盆地南缘中侏罗统头屯河组河流沉积体系的岩性、岩相及铀矿化发育特征,探讨了辫状河相砂体特征与铀成矿关系,认为中侏罗统头屯河组辫状河相的厚大砂体是准噶尔盆地南缘最有利的砂岩型铀成矿载体,控制了工业铀矿化的空间分布,使铀矿化呈多层状、板状发育。Based on laboratory testing and analysis of field geological survey,combined with sedimentary structure and profile characteristics of sand body,the lithology,lithofacies and uranium mineralization development characteristics of a fluvial depositional system of Middle Jurassic Toutunhe Formation in the southern margin of Junggar Basin are analyzed,and the relationship between the characteristics of braided fluvial facies sand body and uranium mineralization was discussed.It was considered that braided fluvial sand bodies of the Toutunhe Formation in the middle Jurassic,are the most favorable space for ore-forming of the sandstone-type uranium deposit in the southern margin of Junggar Basin,which control the spatial distribution of industrial uranium mineralization and making uranium mineralization develop in multilayered and platelike shape.

关 键 词：辫状河 砂体 沉积特征 铀矿化 

分 类 号：P619.14[天文地球—矿床学]