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| 赣中周潭群变质脉体的微量元素及氧同位素地球化学研究 | |
| 引用本文： | 胡恭任,刘丛强,章邦桐,于瑞莲.赣中周潭群变质脉体的微量元素及氧同位素地球化学研究[J].地质论评,2006,52(3):331-340. |
| 作者姓名： | 胡恭任 刘丛强 章邦桐 于瑞莲 |
| 作者单位： | 1. 中国科学院地球化学研究所,贵阳,550002;华侨大学环境科学与工程系,泉州,362021;南京大学内生金属矿床成矿机制研究国家重点实验室,210093 2. 中国科学院地球化学研究所,贵阳,550002 3. 南京大学内生金属矿床成矿机制研究国家重点实验室,210093 4. 华侨大学环境科学与工程系,泉州,362021 |
| 基金项目： | 本文为科技部攀登计划预选项目（编号-95-预39）、南京大学内生金属矿床成矿机制研究国家重点实验室开放基金资助项目的成果.致谢：野外工作得到核工业华东地质局261大队范洪海及东华理工学院余达淦教授的大力支持和协助;中国科学院地球化学研究所李荪蓉高级工程师和漆亮高级工程师分别测定了样品的主元素和微量元素组成,南京大学内生金属矿床成矿机制研究国家重点实验室黄耀生高级工程师测定了样品的氧同位素组成,谨致谢忱. |
| 摘 要： | 笔者等对周潭群沉积变质岩及其中脉体的微量元素、氧同位素地球化学进行了研究，结果表明，变质石英脉继承了其围岩的稀土元素及氧同位素地球化学特征，表明形成石英脉的流体来源于围岩；脉体的微量元素对Zr-Hf、U-Th、Nb-Ta和Y-Ho与变质岩有一定的差异，且有一定的分异，指示脉体是流体作用的产物。变质流体通过侧向扩散作用形成了周潭群变沉积岩中的变质脉体。 |
| 关 键 词： | 变质流体 氧同位素 稀土元素 活动性 周潭群 赣中 |
| 收稿时间： | 9/6/2005 12:00:00 AM |
| 修稿时间： | 2005-09-062006-02-18 |
Study on Oxygen Isotope and Trace Element Geochemistry of Metamorphic Veins within Zhoutan Group in Central Jiangxi Province |
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| HU Gongren,LIU Congqiang,ZHANG Bangtong,YU Ruilian.Study on Oxygen Isotope and Trace Element Geochemistry of Metamorphic Veins within Zhoutan Group in Central Jiangxi Province[J].Geological Review,2006,52(3):331-340. | |
| Authors: | HU Gongren LIU Congqiang ZHANG Bangtong YU Ruilian |
| Institution: | 1. Institute of Geochemistry, Chinese Academy of Sciences, Guiyang, 550002; 2. Department of Environmental Science and Engineering, Huaqiao University, Quanzhou , 362021; 3. State Key Laboratory for Mineral Deposits Research, Nanjing University, Nanjing, 210093 |
| Abstract: | Trace element and oxygen isotope geochemical studies of the metamorphic veins and their host metasedimentary rocks of the Zhoutan Group at two localities, Xiangshan and Yihuang, in central Jiangxi Province have been conducted in this paper. The results show that the metamorphic quartz veins inherited the REE and oxygen isotope geochemical characteristics from their host rocks, suggesting that the vein-forming fluids were from the host rocks. Additionally, trace element pairs Zr-Hf,Nb-Ta,Y-Ho and U-Th of the veins have to certain degree fractionation being little different from those of their host rocks. This also indicates that the veins are the products of the fluids. The metamorphic veins within the Zhoutan Group metasedimentary rocks were formed principally by lateral diffusion of the metamorphic fluids. |
| Keywords: | metamorphic fluid O isotope REE mobility Zhoutan Group central Jiangxi Province |
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