| 山东牟平邓格庄金矿的地球化学特征及成因 |
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| 引用本文：.1997.Geochemical Characteristics and Genesis of the Denggezhuang gold deposit in Mouping, Shandong[J].Mineral Deposits,16(3):204~213 |
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| 基金项目:地矿部“八五”科技攻关项目“中国花岗岩-绿岩地体金矿地质特征、矿床模式及远景预测”（90051-01-1-7） |
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| 中文摘要:邓格庄大型石英脉型金矿，分布于燕山期昆嵛山花岗岩体内金牛山断裂带次级断裂中。成矿年龄118×106 a，它比容矿岩体冷凝至350℃时还晚12×l06 a。成矿深度小于l km (约0.75 km)，而容矿岩体的定位深度大于13 km，它们的定位深度差大于12 km。成矿流体来自地壳深部，通过水-岩反应又从容矿岩体中萃取一部分金。故此金矿不是传统意义的岩浆期后热液矿床。 |
| 中文关键词:金矿 地球化学 成因 东邓格庄 |
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| Geochemical Characteristics and Genesis of the Denggezhuang gold deposit in Mouping, Shandong |
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| Abstract:The Denggezhuang large-size quartz vein type gold deposit lies in the second-order faults of the Jinniushan shear zone within the Yanshanian Kunyushan granite. The ore-forming fluids are characterized by δD -77‰ ~ -89‰, and δ18OH2O +2‰～+3.2‰, the ore-forming temperature and pressure are 150～350℃ and 400×105 Pa respectively. The emplacement age of the gold deposit has been determined to be 118×106 a. The time interval between the formation of the gold deposit and the cooling of the host rock to 350℃ is about l2×106 a, The emplacement of the gold deposit occurred less than l km (about 0.75 km) in depth, but the emplacement of their host rock took place at a depth of over 13 km, suggesting a depth difference of >12 km. The ore-forming fluids came from the depth of the crust and then extracted some gold from the host rocks through water-rock reaction. It is thus concluded that the deposit is of the traditional postmagmatic type. |
| keywords:gold deposit, geochemistry, genesis, Shandong, Denggezhuang |
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