| 华南铀成矿省火山岩-花岗岩型铀成矿作用 |
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| 引用本文： | 邵飞,李嘉,何晓梅,吴云楠.华南铀成矿省火山岩-花岗岩型铀成矿作用[J].国外铀金地质,2010(1):1-5,54. |
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| 作者姓名： | 邵飞 李嘉 何晓梅 吴云楠 |
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| 作者单位： | [1]核工业270研究所,江西南昌330200 [2]南昌工业学校,江西南昌330200 [3]东华理工大学,江西抚州344000 |
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| 摘 要： | 从构造演化—岩浆作用—成矿流体系统将火山岩-花岗岩型铀矿作为统一体开展成矿作用研究。在总结华南热液型铀矿成矿地质特征的基础上,根据区域铀时空分布特征,结合成矿溶液的氢、氧同位素组成,从动力学过程阐述了成矿物质来源,并进而分析了成矿流体演化及成矿作用过程。认为早寒武世富铀地层是华南热液型铀矿最本质的铀物质来源,成矿流体是岩浆水和降水混合的产物,岩浆作用形成了成矿物质的＂汇＂区,燕山期伸展或向伸展过渡的地球动力学背景下的岩浆作用,促成了成矿热液系统的形成、演化及成矿作用的发生,随着岩浆作用物质-能量场的减弱,华南热液型铀矿成矿作用终止。
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| 关 键 词： | 华南铀成矿省 物质来源 成矿流体演化 成矿作用 |
Volcanic and granite type uranium metallogenesis of South China uranium metallogenic province |
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| Authors: | SHAO Fei LI Jia HE Xiao-mei WU Yun-nan |
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| Institution: | 1. Research Institute No. 270,CNNC,Nanchang,Jiangxi 330200,China; 2. Nanchang Industry School,Nanchang,Jiangxi 330200,China; 3. East China Institute of Technology,Fuzhou,Jiangxi 344000,China) |
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| Abstract: | Uranium deposits of both volcanic and granite type are studied as the systematic process of tectonic evolution-magmatism-metallogenic fluid action in South China. By summarizing the geological characteristics of hydrothermal uranium deposits,the spatial-temporal distribution of regional uranium mineralization and hydrogen and oxygen isotopic compositions of ore-forming fluid are used to study the origin of ore-forming matter and to elaborate its evolution and metallogenic process. It is considered that Early Cambrian uranium-rich strata are the most substantial uranium sources for hydrothermal uranium deposit in South China and the ore-forming fluid is the mixture of magmatic water and meteoric water. Uranium was accumulated by magmatism controlled by Yanshanian tectonic extension or transitional geodynamic background which facilitated the formation and evolution of ore-forming hydrothermal systems and metallogenesis. |
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| Keywords: | South China uranium metallogenic province matter sources ore-forming fluid evolution metallogenesis |
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