地质通报2017，Vol.36Issue(4)：503-510,8.
鄂尔多斯盆地南缘彬县地区水文地球化学及铀成矿作用特征
Features of hydrogeochemistry and uranium metallogenesis in Binxian County area on the southern margin of Ordos Basin
摘要
Abstract
Hydrogeological action is regarded as one of the important actions in the formation of sandstone type uranium deposits.According to analyzing the hydrogeological conditions and hydrogeochemical environments,the authors classified groundwater in Mesozoic-Cenozoic strata into porous water in loose rocks,porous-fissures water in cataclastic rocks and fissures water in cataclastic rocks.On such a basis,the water zones were divided into strongly,smoothly and steadily alternate aqueous zones based on charging,flowing and discharging conditions of groundwater.The uranium concentration of different groundwater types,the migrating and enriching characteristics of uranium in different zones and the roles played by acidic/alkali groundwater in wall rock alteration and uranium metallogenesis indicate that uranium metallogenesis in U-bearing aqueous sandstone strata of Middle Jurassic Zhiluo Formation mainly experienced sedimentary diagenetic pre-enrichment,paleo-groundwater's epigenic superimposition,and the reducing deposition of uranium in groundwater from deep oilfield,being a compound genetic type.关键词
水文地质/砂岩型铀矿/地球化学/铀成矿作用Key words
hydrogeology/sandstone type uranium deposit/geochemistry/metallogenesis分类
天文与地球科学引用本文复制引用
张字龙,范洪海,贺锋,刘红旭,贾立城,衣龙升,杨梦佳..鄂尔多斯盆地南缘彬县地区水文地球化学及铀成矿作用特征[J].地质通报,2017,36(4):503-510,8.基金项目
中国核工业地质局项目《鄂尔多斯盆地南缘铀成矿地质特征与远景评价》(编号:201586)、中核集团集中研发项目《鄂尔多斯盆地南部砂岩型铀矿关键因素识别与靶区优选》(编号:地LTD1601-3)和国家973项目《北方典型产铀盆地成矿机理与成矿模式》(编号:2015CB453004) （编号:201586）
