地质通报2017，Vol.36Issue(4)：527-533,7.
鄂尔多斯盆地南缘彬县地区铀成矿关键时期的古地貌特征
Palaeogeomorphologic features in the critical period of uranium mineralization in Binxian area, southern Ordos Basin
摘要
Abstract
During Middle Jurassic period,i.e.,the sedimentary period of Lower Zhiluo Formation,the braided channel was a favorable sand body of uranium reservoir that hosted uranium,and uranium was mainly controlled by palaeogeomorphology and mainly developed in low-lying areas.The Late Jurassic,Early Cretaceous-Paleocene and Eocene-Miocene were main uranium mineralization stages.Palaeogeomorphology controlled the migration of underground water,the distribution of the redox zone and the enrichment of uranium deposits.During the Late Jurassic uranium pre-mineralization period,diving leaching caused the migration of uranium-beating materials from the uplift to the slope and low-lying areas;during the main uranium mineralization period of Early Cretaceous-Paleocene,palaeogeomorphology controlled the direction of the water flow with oxygen and uranium,and the redox zone was distributed mainly in the slope area of the ancient landform.关键词
古地貌特征/沉积期/成矿期/铀成矿Key words
palaeogeomorphology/sedimentary period/mineralization period/uranium mineralization分类
天文与地球科学引用本文复制引用
贺锋,张字龙,刘红旭,李平,李亚锋,殷龙飞..鄂尔多斯盆地南缘彬县地区铀成矿关键时期的古地貌特征[J].地质通报,2017,36(4):527-533,7.基金项目
中核集团青年科技创新团队项目《鄂尔多斯盆地东南缘油气耗散与铀成矿的时间配置关系研究》(编号:地HQX1601)、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:2016地LTD1601-3)、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)、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:地HQX1601）
