| 达拉松超大型金矿床成矿学特征及其演化 |
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| 引用本文： | 姚振凯,刘翔.达拉松超大型金矿床成矿学特征及其演化[J].大地构造与成矿学,1998,22(1):45-54. |
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| 作者姓名： | 姚振凯 刘翔 |
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| 作者单位： | 核工业长沙230研究所 |
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| 摘 要： | 达拉松金矿床位于俄罗斯东亚地区，是世界驰名的超大型金矿床之一。矿床形成具有经历过多个大地构造成矿阶段、多种成因成矿和多种金来源的特征。主成矿作用是中低温热液作用，成矿热液和成矿驱动力与中生代地洼阶段构造-岩浆活化有密切关系。成矿热液中的金来自地槽阶段海西期花岗岩内的金再造和地洼阶段的深部金源。热液成矿后矿区地壳继续隆起，导致风化剥蚀作用强烈发育，在达拉松河谷阶地内形成沉积砂金矿化。因而，该矿床的形成类似于层控金矿床原理，只是矿源层在该区应为矿源岩体。矿区内既有内生金成矿富集，又有外生砂金成矿富集，共同组成一个超大型金矿床。据此将该矿床列为多因复成金矿床类型。
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| 关 键 词： | 达拉松金矿床 俄罗斯 多因复成类型 |
METALLOGENETIC CHARACTERISTICS OF THE DARASON GOLD DEPOSIT AND ITS EVOLUTION |
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| Abstract: | The Darason gold deposit is located in the East Asia area of Russia, and is one of the famous ultra-large type gold deposits in the world. The formation of the deposit is characterized by geotectonic multistage, gold multisource and multigenesis. The master metallogenesis is middle-low temperature hydrothermal process, and both the hydrothermal ore-forming and the ore-forming driving force are related to the Mesozoic tectono-magmatic activation in Diwa stage. Gold in the hydrothermal ore-forming solution comes from both the gold re-formation in Hercynian granite in geosyclinal stage and the gold source at depth in Diwa stage.After hydrothermal metallization, the crust in the ore area uplifted continually, that led to the intense development of weathering and denudation and the formation of sedimentary gold placer in the stream valley terrace of Darason. Therefore, the formation of the deposit is similar to the stratabound gold deposit, but the source bed is a source body. There is not only endogenic gold metallization, but also exogenetic gold placer enrichment, forming a ultralarge type gold deposit, so that the deposit is listed as a polygenetic compound gold deposit. |
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| Keywords: | Darason gold deposit Russia polygenetic compound type |
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