巴丹吉林盆地沙枣泉铀矿床成矿特征与成矿模式  

Mineralization Characteristics and Forming Model of Shazaoquan Uranium Deposit in Badanjilin Basin

作　　者：苟学明 李万华 姬海军 郭长林 耿海军 何大鹏 

机构地区：[1]核工业203研究所,陕西咸阳712000

出　　处：《铀矿地质》2014年第1期7-13,共7页Uranium Geology

基　　金：中国核工业地质局铀矿地质科研项目(编号:2011-50);国土资源大调查项目(编号:1212010633003)联合资助

摘　　要：巴丹吉林盆地是我国砂岩型铀矿产地之一。笔者通过沙枣泉地区地质调查、钻探查证和地球化学分析等,对该区铀成矿地质背景、矿床地质特征进行研究,重点探讨了沙枣泉铀矿床成因和成矿模式。依据沙枣泉地区的构造及盆地演化、铀矿化特征、控矿因素和成矿年龄等,认为区内铀成矿具有两阶段特征:即同生预富集矿化阶段和后生氧化改造富集成矿阶段;铀矿体主要赋存在早白垩世晚期的构造-沉积转化面,产于盆地形成后由于构造运动所产生的向斜凹陷部位。Badanjilin basin is an sandstone type uranium base in China. By geology survey, drilling explo- ration checking and geochemical analysis, the author studied the geology background, geology features of uranium mineralization, and focused the discussing on the forming genesis and model of uranium de- posit in Shazaoquan area. According to the structural coupling, basin evolution, uranium mineralization features, ore-controlling factors and minerlization ages, two phases of uranium mineralization were found in Shazaoquan area： syngenetie pre-enriched mineralization and epigenetic oxidization enriching minerali- zation. Uranium orebody is located above the intersurface of structural-sedimentary in early Cretaceous which is concentreated in the central depression of the basin formed by structural movement.

关 键 词：沙枣泉铀矿床 成矿模式 巴丹吉林盆地 

分 类 号：P612[天文地球—矿床学]