| 鄂尔多斯盆地南部含铀砂岩岩石学特征研究 |
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| 引用本文： | 田成,贾立城,李松,张子敏.鄂尔多斯盆地南部含铀砂岩岩石学特征研究[J].铀矿地质,2007,23(2):71-76. |
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| 作者姓名： | 田成 贾立城 李松 张子敏 |
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| 作者单位： | 1. 中国地质大学(北京),北京,100083
2. 核工业北京地质研究院,北京,100029 |
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| 基金项目： | 核工业北京地质研究院核能开发二期专项 |
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| 摘 要： | 文章在对鄂尔多斯盆地南部砂岩岩石学特研究的基础上，重点探讨了砂岩赋铀性与岩石结构组分的关系和粘土矿物演化、压实与胶结、溶蚀与次生孔隙形成等主要成岩作用对岩石渗透性与铀的运移聚集的影响。将研究区含铀砂岩划分成4种赋铀砂岩类型，讨论了不同岩石类型的成矿性特征。综合分析了铀成矿条件，建立了砂岩型铀矿成矿模式，为研究区铀成矿有利区段预测提供了岩石学证据。
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| 关 键 词： | 鄂尔多斯盆地 岩石结构组分 成岩作用 砂岩型铀矿成矿模式 |
| 文章编号： | 1000-0658（2007）02-0071-06 |
| 修稿时间： | 2006-09-11 |
Study of petrological characteristics of uranium-bearing sandstone in the south of Ordos basin, China |
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| TIAN Cheng,JIA Li-cheng,LI Song,ZHANG Zi-min.Study of petrological characteristics of uranium-bearing sandstone in the south of Ordos basin, China[J].Uranium Geology,2007,23(2):71-76. |
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| Authors: | TIAN Cheng JIA Li-cheng LI Song ZHANG Zi-min |
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| Institution: | 1. China University of Geosciences, Beijing 100083, China 2. Beijing Research Institute of Uranium Geology, Beijing 100029, China |
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| Abstract: | This paper discusses the relation between uranium-bearing abundance and texture constituent of sedimental rock, on the basis of the research of petrological characteristics of sandstone in the south of Ordos basin. The influence of infiltration of sandstone and uranium migration and accumulation by the major diagenesis of compaction and cementation, clay minerals evolution, corrosion and forming of secondary porosity are discussed. Uranium-bearing sandstones are divided into four types and their petrological characteristics are discussed. After mineralization conditions being summed up, the uranium- mineralization model of sandstone-type is built. Reliable petrological evidences for evaluating favourable uranium mineralization rich areas are furnished. |
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| Keywords: | Ordos basin~ texture constituent of rock diagenesis uranium-mineralization model |
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