| 广西古袍金矿区花岗斑岩侵入期后多期热液成矿作用的Ar-Ar年龄证据 |
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| 关键词:gold deposi granite porphyry multi-stage hydrothermal activity isotope Gupao |
| 基金项目:广西自然科学基金项目“桂东南火山期后构造-热液作用与金矿成矿作用研究”（编号：桂科回 0342025）资助 |
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| Isotopic Evidence for Multi-stage Ore-forming Processes after the Intrusion of Granite Prophyry in the Gupao Gold Ore District,Guangxi |
| Granite porphyry stocks in the Gupao gold ore district are located in the west of Gupao synclinorium. The country rocks are mainly a suite of slightly metamorphosed sandstone, siltstone, siliceous rock, slate, phyllite and carbonaceous shale in Cambrian Shuikou Group. 40Ar/39Ar data of quartz from the granite porphyry and from the quartz veins in the granite porphyry range from 187.87±1.53Ma to 244.88±2.48 Ma, indicating products of structural hydrothermal fluids of Late Hercynian, Indosinian or Early Yanshanian perods. Gold mineralization is related to the activity of the multi-stage structural hydrothermal fluids after the intrusion of the granite porphyry, and controlled by the quartz veins and pyritization that fill the fault zones. |
| ZHU Guitian,XU Wenxin,LI Heng,ZHU Wenfeng.2005.Isotopic Evidence for Multi-stage Ore-forming Processes after the Intrusion of Granite Prophyry in the Gupao Gold Ore District,Guangxi[J].Acta Geoscientica Sinica,26(z1):156-159. |
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