Paleo-uplifts in sedimentary basins play a significant role in controlling the accumulation of oil and gas,and their impact on sandstone-type uranium mineralization should not be underestimated.Sandstone-type uranium deposits are typically located on the slopes at the margins of basins and near the uplifts within the basins.The constraints of uplifts on the sandstone-type uranium mineralization are particularly evident in the control of groundwater recharge-runoff-discharge system,the regulation of interlayer oxidation reactions,the influence on sedimentary facies development,the promotion of material transport through associated faults,and the supply of uranium for mineralization.Since the Cenozoic era,the sedimentary basins in northern China have undergone complex tectonic activities,resulting in the formation of multiple uplifts due to the uneven development within basins.Therefore,in uranium exploration in China,particular attention needs to be paid to the control of uplifts on uranium mineralization.In this regard,exploration within the basin should focus on uplifts that have undergone significant tectonic uplift,while exploration on the slopes at the margins of basins should emphasize micro-uplifts and folds in overlying formations of the basement.Considering uplifts as key ore-controlling factors,selecting appropriate prospecting methods,and finely characterizing the anticlines,folds,and associated faults formed by the uplift of the basin basement can effectively enhance uranium prospecting efficiency and expand the uranium prospecting space.
关键词
砂岩型铀矿/隆起/构造斜坡带/盆地内部/成矿流体
Key words
sandstone-type uranium deposit/uplift/tectonic slope zone/interior of the basin/ore-forming fluids
维普
万方数据