| 青海省大场地区金矿床成矿特征及成因探讨 |
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| 引用本文： | 王维,童海奎,郭世珍,马秀兰,苏生顺. 青海省大场地区金矿床成矿特征及成因探讨[J]. 黄金科学技术, 2009, 17(2): 23-27 |
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| 作者姓名： | 王维 童海奎 郭世珍 马秀兰 苏生顺 |
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| 作者单位： | 青海省国土资源勘查项目管理中心,青海,西宁,810001;青海省地质调查院,青海,西宁,810001 |
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| 摘 要： | 通过对大场地区金矿床成矿地质背景、地质特征的研究, 认为金主要来源于上地幔, 金的成矿与印支期前陆边缘盆地向北俯冲并继而向东昆仑斜向碰撞这一热动力构造事件有关。在韧性剪切作用及强烈的热动力驱动下, 本区以大范围的构造变形及热液充填、蚀变成矿为主要特点。矿床及其空间上的分布严格受右行走滑对冲式构造体的控制, 且此种成矿类型具有集中成束、成带分布的特点, 金的成矿具有叠加成矿特点, 矿床成因类型属中低温构造破碎蚀变岩型金矿。
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| 关 键 词： | 大场金矿床 地质特征 矿床成因 构造破碎蚀变岩型 |
| 收稿时间： | 2008-10-21 |
| 修稿时间： | 2008-11-04 |
Metallogenic Features and Genesis of Dachang Gold Ore-field in Qinghai Province |
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| WANG Wei,TONG Haikui,GUO Shizhen,MA Xiulan,SU Shengshun. Metallogenic Features and Genesis of Dachang Gold Ore-field in Qinghai Province[J]. Gold Science and Technololgy, 2009, 17(2): 23-27 |
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| Authors: | WANG Wei TONG Haikui GUO Shizhen MA Xiulan SU Shengshun |
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| Affiliation: | 1.Explorative Projects Management Center of Qinghai Province Land and Resources,Xining 810001,Qinghai,China;2.Qinghai Province Institute of Geological Survey,Xining 810001,China |
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| Abstract: | Through study of metallogenic geological background and geological characteristics of Dachang gold ore field,we consider that the gold is mainly from upper mantle and the gold mineralization is related to a thermal-dynamic event,i.e.,the Indosinian foreland marginal basin subducted northward and then collisioned obliquely with east Kunlun.As a result of ductile shearing and strong thermal-dynamic driving,a large scale tectonic deformation,hydrothermal filling and altering-mineralization become the main feat... |
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| Keywords: | Dachang gold deposit Geological features Genesis of deposit Tectonic fragment-alteration rock type |
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