| 热水沉积成矿的主要控制因素及识别标志 |
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| 引用本文： | 方适宜,郑大瑜.热水沉积成矿的主要控制因素及识别标志[J].铀矿地质,1993(4). |
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| 作者姓名： | 方适宜 郑大瑜 |
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| 作者单位： | 中南地勘局，中南地勘局 湖南长沙 410011，湖南长沙 410011 |
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| 摘 要： | 热水沉积成矿的基本要点可以归纳为:古陆边缘,地壳受热、变薄、拉张、裂陷和迅速下沉,矿床定位于三级边缘成矿盆地中;同生断裂对导矿容矿有明显的控制作用;硅质建造与成矿关系密切;有层状矿体层纹状矿石的热水沉积成因和网脉状矿体角砾状矿石的同生-准同生交代成因;成矿热液中的金属物质主要来源于古老剥蚀区和先期盆地沉积物。在上述基础上,总结了热水沉积成矿的10条识别标志。
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| 关 键 词： | 热水成矿 控矿因素 物质来源 识别标志 |
PRINCIPAL ORE-CONTROLLING FACTORS AND RECOGNITION CRITERIA FOR THE HYDROTHERMAL SEDIMENTARY METALLOGENESIS |
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| Fang Shiyi Zheng Dayu.PRINCIPAL ORE-CONTROLLING FACTORS AND RECOGNITION CRITERIA FOR THE HYDROTHERMAL SEDIMENTARY METALLOGENESIS[J].Uranium Geology,1993(4). |
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| Authors: | Fang Shiyi Zheng Dayu |
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| Abstract: | The main grounds for hydrothermal sedimentary metallogenesis may be ascribed to marginal palaeocontinent, heating, thinning extension, down-faulting and rapid subsiding of the earth' s crust and the deposits are located in the marginal metallogenetic basin of the third order. There are evidences that syngenetic faults controlled the introduction and concentration of ore-forming matters. Siliceous formation was closiey related to metallogenesis. Lamellar ores in layered ore bodies are of hydrothermal sedimentary origin and brecciated ores in stockwork ore bodies are of syngenetie-parasyngenetic metasomatie origin. Metallic matters in ore-forming hydrothermal solutions are mainly derived from old erosional region and pre-existing basin sediments. On the basis of above-mentioned, ten recognition criteria for the hydrothermal sedimentary metaUogenesis are summarized. |
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| Keywords: | Hydrothermal metallogenesis Ore-controlling factor Source of matters Recognition criteria |
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