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Analysis on metallogenic conditions of ISL-amenable sandstone-type uranium deposits in Kelulun down-faulted basin, Inner Mongolia
Author(s): 
Pages: 83-89
Year: Issue:  2
Journal: URANIUM GEOLOGY

Keyword:  克鲁伦盆地可地浸砂岩型铀矿找矿潜力评价;
Abstract: 克鲁伦断陷盆地是海拉尔盆地内部的次级构造单元,位于海拉尔盆地西南缘,是一个近NE方向展布的长条形盆地,面积约2000 km2.克鲁伦断陷盆地北西缘是一个构造斜坡带,具有完整独立的地下水补给、径流和排泄条件;基底岩石不但原始铀含量高,而且其中大部分的铀经后生改造能够被活化释出;克鲁伦断陷盆地古气候经历了温湿-干旱炎热的演化过程,是可地浸砂岩型铀矿成矿的有利古气候条件.克鲁伦盆地的找矿目的层是下白垩统大磨拐河组上段,该段存在较好的砂体条件.克鲁伦盆地存在潜水氧化带型和潜水-层间氧化带型两种铀矿化类型.因此,克鲁伦断陷盆地存在较好的铀矿成矿条件,具有进一步找矿的潜力.
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