| 张嘉冕,张玉龙.甘肃陇东地区国家湾砂岩型铀矿床特征及控矿因素[J].甘肃地质,2022,(1):41-45 |
| 甘肃陇东地区国家湾砂岩型铀矿床特征及控矿因素 |
| Characteristics and Ore-Controlling Factors of Guojiawan Sandstone Type Uranium Deposit in East Region of Gansu Province |
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| DOI： |
| 中文关键词: 铀矿 特征 控矿因素分析 国家湾 甘肃陇东地区 |
| 英文关键词:uranium deposit characteristic analysis of ore-controlling factors Guojiawan Gansu Province |
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| 中文摘要: |
| 国家湾铀矿化主要赋存在马东山组河流相疏松砂岩中，铀矿体呈卷状、似层状产于氧化带前锋部位，属同生沉积初始富集进而后生改造为主的层控矿床，受控于氧化—还原过渡带，铀成矿主要遵循外生成矿机制。区域上下白垩统志丹群罗汉洞组与志丹群除底部具有较好找矿前景。 |
| 英文摘要: |
| The uranium mineralization in Guojiawan Bay mainly occurs in fluvial unconsolidated sandstone of Madushan Mountain Formation, and the uranium ore body is in the front of the oxidation zone in a rolled-like layer-like manner. It is a stratified deposit dominated by syngenetic deposition and initial enrichment followed by epigenetic transformation. It is controlled by the REDOX transition zone, and the uranium mineralization mainly follows the exogenetic metallogenic mechanism The upper and lower Cretaceous East region of Gansu Province Formation of Zhidan Group and the bottom of Zhidan Group in the region have good prospecting prospects |
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