| 巩 祎,彭向丰,韩 旭,李晓龙,陈林生.鄂尔多斯盆地南缘可地浸砂岩型铀矿集中区地质特征及成矿条件分析[J].甘肃地质,2025,(1):22-28 |
| 鄂尔多斯盆地南缘可地浸砂岩型铀矿集中区地质特征及成矿条件分析 |
| Geology ｏf Sandstone Type Uranium Deposits ｉn Uranium Concentration Area ａt ｔhe Southern Margin ｏf Ordos Basin |
| |
| DOI： |
| 中文关键词: 可地浸砂岩型铀矿 铀矿集中区 地质特征 成矿条件 找矿前景 鄂尔多斯盆地南缘 |
| 英文关键词:in situ leachable sandstone type uranium deposit uranium concentration area sedimentary environment the southern margin of Ordos Basin |
| 基金项目: |
|
| 摘要点击次数: 90 |
| 全文下载次数: 91 |
| 中文摘要: |
| 鄂尔多斯盆地南缘的平凉—陇县和黄陵—彬县铀矿集中区，铀矿化分布范围广、面积大、沉积环境稳定，以“泥—砂—泥”典型的二元沉积结构形成层间氧化带和氧化前锋线为特征。通过对成矿地质背景、铀矿化层特征、铀矿集中区、典型矿床和矿点的矿化特征等综合分析，认为两个矿集中区含矿层为下白垩统志丹群罗汉洞组和六盘山群马都山组。具有缓倾角、埋深浅、泥沙比值相近、岩石结构松散、易开采等特点。鄂尔多斯盆地南缘地区具备良好的铀矿成矿条件和找矿前景，为寻找可地浸砂岩型铀矿提供了一定的找矿依据和理论指导。 |
| 英文摘要: |
| Taking Pingliang Longxian and Huangling Binxian uranium concentration areas in the southern margin of Ordos Basin as examples, the in-situ leachable sandstone type uranium deposits are characterized by a wide distribution, large area and stable sedimentary environment, and are characterized by the formation of interlayer oxidation zones and oxidation fronts in the typical "mud sand mud" binary sedimentary structure. Through comprehensive analysis of metallogenic geological background, characteristics of uranium mineralized layer, uranium concentration area, mineralization characteristics, metallogenic conditions and prospecting prospects of typical deposits and occurrences, it is considered that the ore bearing layers in the two ore concentration areas are luohantong formation of Zhidan group of Lower Cretaceous and Madushan formation of Liupanshan group. It has the characteristics of low dip angle, shallow buried depth, sediment ratio of about 1, loose rock structure and easy mining. The southern margin of Ordos Basin has good uranium prospecting prospects, which provides a certain prospecting basis and theoretical guidance for the search for in-situ leachable sandstone type uranium deposits. |
| 查看全文 查看/发表评论 下载PDF阅读器 |
| 关闭 |
|
|
|
