二连盆地中部古河道砂岩型铀矿成矿特征  

Characteristics of Paleo-valley Sandstone-type Uranium Mineralization in the Middle of Erlian Basin

作　　者：刘武生[1] 康世虎[2] 贾立城[1] 史清平[1] 彭聪 

机构地区：[1]核工业北京地质研究院中核集团铀资源勘查与评价技术重点实验室,北京100029 [2]核工业208大队,内蒙古包头014010

出　　处：《铀矿地质》2013年第6期328-335,共8页Uranium Geology

基　　金："中核集团重点专项"(编号:DZD 162-3)资助

摘　　要：笔者通过对铀源、赛汉组上段沉积建造、构造演化等的分析认为,二连盆地中部具备古河道砂岩型铀矿成矿条件;古河道形态与规模、河道内沉积微相、潜水-层间氧化是铀矿床定位的"三要素",其不同的组合方式构成了不同的古河道砂岩型铀矿成矿模式。据此,指出二连盆地中部具有较好的古河道找矿远景。By analyzing the uranium resource, sedimentary formation of upper member of Saihan formation, tectonic evolution, we believed the paleo-valley sandstone-type uranium metallogenic condition is very well in the middle of Erlian basin. Through analyzing the mineralization feature of paleo-valley type uranium deposits, it was found that the morphology and scale of the paleo-valley, microfacies of paleovalley sediment and epigenetic reformation were the three factors to controll the uranium deposits, and different combination of the factors will form different paleo-valley type uranium metallogenic model. Accordingly, we point out that metallogenic prospect for paleo-valley type uranium deposits is fine in the middle of Erlian basin.

关 键 词：二连盆地 古河道 赛汉组 铀成矿作用 

分 类 号：P612[天文地球—矿床学]