| 新洲金矿床的地质特征及其成因 |
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| 引用本文： | 彭少梅.新洲金矿床的地质特征及其成因[J].矿产与地质,1991,5(5):375-381. |
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| 作者姓名： | 彭少梅 |
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| 作者单位： | 中国科学院贵阳地球化学研究所矿床开发室 |
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| 摘 要： | 广东新洲金矿床产于褶皱式推覆构造外来系统——震旦系乐昌峡群变质地层之中.金矿床主要属碎裂石英脉型,次为蚀变糜棱岩型.成矿作用早期形成糜棱岩型金矿,为韧性剪切成矿期;晚期形成碎裂石英脉型金矿、属韧-脆性和脆性成矿期.成矿溶液为浅成中低温变质-混合岩化热液,成矿物质来源于震旦系,属褶皱式逆冲推覆-剪切带型金矿床.
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| 关 键 词： | 金矿 矿床 地质 成因 成矿 |
THE GEOLOGICAL CHARACTERISTICS AND FORMATION MECHANISM OF XINZHOU GOLD DEPOSIT IN NORTHERN GUANGDONG PROVINCE |
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| Peng Shaomei.THE GEOLOGICAL CHARACTERISTICS AND FORMATION MECHANISM OF XINZHOU GOLD DEPOSIT IN NORTHERN GUANGDONG PROVINCE[J].Mineral Resources and Geology,1991,5(5):375-381. |
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| Authors: | Peng Shaomei |
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| Abstract: | Xinzhou Au deposit and ore bodies occur as veins in the metamorphic Sinian Lechangxia Group in the allochthon of the fold-thrust nappe. The Au deposit is dominantly cataclastic quartz-vein type, secondly altered mylonite type. The early stage the mineralization is of ductile shearing, which formed the mylonite-type Au deposit. The later stage of mineralization is of ductile-brittle shearing and brittle shearing, which formed cataclastic quartz-vein type Au deposit. The ore solution is a metamorphosed and migmatized hydrothermal fluid formed in hypabyssal moderate-to low-temperature conditions and that the ore-forming materials come mainly from the metamorphic Sinian strata.Consequently, the Xinzhou gold deposit is considered to be a fold-thrust-shear zone type gold deposit. |
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| Keywords: | Gold deposit Fold-thrust nappe r Mineralization Ore-forming hydro thermal fluid |
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