| 湖南省金和有色金属矿床成矿系列初论 |
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| 引用本文：.1995.A preliminary discussion on metallogenic series of gold and nonferrous metallic deposits in Hunan Province[J].Mineral Deposits,14(4):329~334,354 |
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| 中文摘要:湖南省内生金属矿产资源颇为丰富。钨、锡、铅、锌、锑为省内优势矿种；稀土、稀有、金、银、铜、汞也占有十分重要的地位。按照成矿过程中的主导地质作用，省内金和有色金属矿床可以划分为五个矿床成矿系列。本文对各矿床成矿系列的形成地质背景、产出构造条件、赋矿围岩、矿床类型进行了总结；并对其时空展布规律进行了讨论。 |
| 中文关键词:金和有色金属矿床 成矿系列 湖南省 |
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| A preliminary discussion on metallogenic series of gold and nonferrous metallic deposits in Hunan Province |
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| Abstract:There are very abundanr gold and nonferrous metallic ore resources in Hunan, in which tungsten, tin, lead-zinc and antimony are main ore resources, and gold, silver, copper, mercury and rare metals also occupy an important position. In the light of main geological activity in the ore-forming process, this paper has classified these ore resources into five metallogenic series, with a discussion given concerning their geological setting, ore-forming process, and temporal-spatial distribution. (1) Tungsten-antimony-gold metallogenic series in Precambrian epimetamorphic rocks: ore deposits of this series are distributed in Xuefengian arcuate tectonic belt and northeastern Hunan on the southern margin of Yangtze platform (plate); host rocks are Middle-Late Proterozoic epimetamorphic clastic rocks; ore-forming fluids include metamorphic hydrothermal solution and deep-circulating hot fluid; mineralization lasted from Xuefengian period to Yanshanian period, with the principal ore-forming period being Indosinian-Yanshanian. (2) Lead-zinc-mercury metallogenic series in Sinian carbonate rock:ore deposits are distributed in northwestern Hunan area belonging to Yangtze platform (plate); ore-forming fluids are deep-circulating underground hot solutions; metallogenic periods are Indosinian-Yanshanian. (3) Lead- zinc- gold- antimony metallogenic series in Devonian clastic rock- carbonate rock association: ore deposits are mainly scattered in central Hunan area belonging to South China platform (plate); ore-forming fluids are mainly deep-circulating underground hot solutions; mineralization took place in Indosinian-Yanshanian. (4) Copper and lead-zinc gold silver metallogenic series related to Yanshanian hypabyasal-superhypabyssal crust-mantle mixed rocks and intermediate-acid intrusive rocks: ore deposits are distributed in a NNE-trending banded area southeast of Changshoujie-Shuangpai deep fault and northwest of Chaling-Linwu deep fault; mineralization is genetically closely related to the development of Mesozoic intraplated rift and the formation of hot mantle plume; ore-forming fluids are mainly magmatic hydrothermal solutions; mineralization took place in Yanshanian period. (5) Tungsten- tin- lead- zinc- silver- RE- REE metallogenic series: ore deposits are spread in south China area belonging to South China platform (plate) ; mineralization is genetically closely related to Mesozoic intraplate thrusting, interlayer-gliding and decollement as well as the existence of mantle hot spots; ore- forming process mainly occurred in Yanshanian period. Though distributed in different areas of Hunan Province and characterized by different geological settings and ore-forming processes, these five metallogenic series all have Indosinian-Yanshanian period as the principal ore-forming period, and this must have had to do with the strongest tectonomagmatic thermal event in geological history that took place in Indosinian-Yanshanian period. The summarization and classification of metallogenic series will contribute to summing up regional metallogenic regularity and carrying out ore prognosis in Hunan Province. |
| keywords:gold and nonferrous metallic deposits, metallogonic series, Hunan |
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