| 青海滩间山金矿床成矿模式 |
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| 引用本文： | 于凤池,魏刚锋,孙继东,王永祥,梅安静.青海滩间山金矿床成矿模式[J].地球科学与环境学报,1998,20(1):18. |
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| 作者姓名： | 于凤池 魏刚锋 孙继东 王永祥 梅安静 |
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| 作者单位： | 1. 西安工程学院资源系,西安,710054
2. 青海省地质矿产局,西宁,810001 |
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| 基金项目： | 地质矿产部定向科研项目 |
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| 摘 要： | 滩间山金矿床位于柴达木地块北缘，产于中元古界蓟县系万洞沟群碳质糜棱片岩和华力西晚期侵入岩中。矿床形成与柴北缘区域地壳多阶段演化和多次成矿作用有关，属多因复成矿床。矿床是在热水沉积、区域变质、热变质等预富集的基础上，与区域绿片岩相韧性剪切带的退化演化同步，经历了脆韧性、韧脆性和脆性剪切变形成矿阶段的演化并遭受华力西晚期侵入岩浆活动的叠加改造形成的。成矿物质来自容矿黑色岩系和华力西晚期侵入岩。
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| 关 键 词： | 韧性剪切带 碳质糜棱片岩 华力西晚期侵入岩 成矿模式 青海 |
| 修稿时间： | 1997 |
METALLOGENIC MODEL OF THE TANJIANSHAN GOLD DEPOSIT IN QINGHAI PROVINCE |
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| Yu Fengchi,Wei Gangfeng,Sun Jidong,Wang Yongxiang,Mei Anjing.METALLOGENIC MODEL OF THE TANJIANSHAN GOLD DEPOSIT IN QINGHAI PROVINCE[J].Journal of Earth Sciences and Environment,1998,20(1):18. |
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| Authors: | Yu Fengchi Wei Gangfeng Sun Jidong Wang Yongxiang Mei Anjing |
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| Abstract: | Located on the northern margin of Qaidam Massif, the Tanjianshan gold deposit occures in the carbonaceous mylonite schist of Wandonggow Group,Jixian System, Middle Proterzoic Erathem as well as in the Late Variscan intrusive roccks. The deposit belongs to a poly genetic compound gold deposite resulting from multi mineralizations and its formation is associated with multi stages evolution of the crust in the area.Hydrothermal sedmentation,regional metamorphism and thermal metamorphism led to the primary enrichment of the ore forming material. The retrograde metamorphism of the regional greenshist facies brittle ductile shear deformation and metamorphic zone in conjunction with brittle ductile, ductile brittle and brittle shear deformation supperimposed by intrusive activity of the Late Variscan resulted in the formation of the ore deposit. The ore forming materials were derived from the source bed (black rock series) and Late Variscan intrusive rocks. |
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| Keywords: | Ductile shear zone Carbonaceous mylonite schist Late Variscann intrusive rocks Metallogenic model |
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