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| 新疆十红滩层间氧化带型砂岩铀矿同位素地球化学研究 | |
| 引用本文： | 朱西养,彭新建,汪云亮,张成江,王志畅,王金平,刘建华.新疆十红滩层间氧化带型砂岩铀矿同位素地球化学研究[J].矿床地质,2004,23(4):443-451. |
| 作者姓名： | 朱西养 彭新建 汪云亮 张成江 王志畅 王金平 刘建华 |
| 作者单位： | 1. 成都理工大学,四川,成都,610059;核工业280研究所,四川,广汉,618300 2. 南京大学地球科学学院,江苏,南京,210093 3. 成都理工大学,四川,成都,610059 4. 核工业280研究所,四川,广汉,618300 |
| 基金项目： | 国家自然科学基金(No.40173031)，科技部305攻关项目(2001BA609A-07-13)，核工业铀矿地质科研基金(HD2001-36)的联合资助 |
| 摘 要： | 文章在对吐哈盆地十红滩层间氧化带型砂岩铀矿床地下水和粘土矿物的氢、氧同位素，钙质砂岩的碳、氧同位素，黄铁矿和长石的铅、硫同位素组成进行分析测试的基础上，系统总结了矿床的地球化学特征；认为形成层间氧化带和铀矿化的层间水主要来自大气降水，研究区水与有机烃类气体同位素交换、强烈的蒸发作用和水岩反应是控制地下水和矿物中同位素分馏的主要机制，层间氧化带和铀富集成矿是地下水在低温、常压下对围岩长期作用的结果，钙质砂岩的碳和黄铁矿的硫均主要为生物有机成因，盆地深部的煤成油、气也参与了成矿作用。 |
| 关 键 词： | 地球化学 同位素 层间氧化带 砂岩型铀矿床 十红滩 新疆 |
| 文章编号： | 0258-7106(2004)04-0443-11 |
| 修稿时间： | 2003年9月10日 |
Isotope Geochemistry of Shihongtan Interlayer Oxidized Zone Type Sandstone Uranium Deposit |
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| Zhu Xiyang ,Peng Xinjian ,Wang Yunliang ,Zhang Chengjiang ,Wang Zhichang ,Wang Jinping and Liu Jianhua.Isotope Geochemistry of Shihongtan Interlayer Oxidized Zone Type Sandstone Uranium Deposit[J].Mineral Deposits,2004,23(4):443-451. | |
| Authors: | Zhu Xiyang Peng Xinjian Wang Yunliang Zhang Chengjiang Wang Zhichang Wang Jinping and Liu Jianhua |
| Institution: | Zhu Xiyang 1,2,Peng Xinjian 3,Wang Yunliang 1,Zhang Chengjiang 1,Wang Zhichang 1,Wang Jinping 3 and Liu Jianhua 2 |
| Abstract: | This paper reports the analytical results of hydrogen and oxygen isotopes in groundwater and clay minerals, carbon and oxygen isotopes in calcite from calcareous sandstone, and lead and sulfur isotopes of pyrite and feldspar in ores of the Shihongtan deposits. On the basis of these analyses, their isotopic geochemical characteristics are systematically summarized. It is held that the interlayer water derived from atmospheric water formed the interlayer oxidized zones (IOZ) and resulted in uranium mineralization. The isotopic exchange between water and organic gas as well as strong evaporation and water_rock interactions controlled isotopic fractionation in groundwater and minerals.IOZ and uranium mineralization forming uranium deposits were the results of the long_term ground water_rock interaction at the normal temperature and pressure. The carbon and oxygen of calcite in calcareous sandstone and sulfur of pyrite are mainly of organic origin. The oil and gas derived from coal were also involved in the ore_forming process. |
| Keywords: | geochemistry isotope interlayer oxidized zone sandstone type uranium deposit Shihongtan Xinjiang |
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