| 李杰,倪师军,李世勇,张成江,杨立新.苏丹北部拜尤达地区金矿地质特征及找矿远景[J].地质找矿论丛,2012,27(2):214-221 |
| 苏丹北部拜尤达地区金矿地质特征及找矿远景 |
| The geologic characteristics and exploration potential of gold deposit in Bayuda area, north Sudan |
| 投稿时间：2011-11-08 修订日期：2012-03-13 |
| DOI：10.6053/j.issn.1001-1412.2012.02.013 |
| 中文关键词: 哈佳吉金矿 造山型金矿 韧性剪切带 前寒武系 苏丹拜尤达地区 |
| 英文关键词:Hagagia gold deposit orogenic-type gold deposit ductile shear zone Precambrian Bayuda area of Sudan |
| 基金项目:国土资源部境外矿产资源风险勘查基金项目(2011年度)资助。 |
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| 摘要点击次数: 2001 |
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| 中文摘要: |
| 苏丹拜尤达地区位于苏丹北部尼罗河州,区内已圈定1处中型金矿床,7处金矿找矿靶区。根据拜尤达地区金矿成矿地质条件及哈佳吉中型金矿床的地质特征、矿石和围岩的微量元素地球化学特征,将金矿床成矿过程分为热液期、表生氧化期和风化沉积期。认为该地区金矿为受区域韧性剪切带控制的中温浅成变质热液矿床,属造山型金矿。成矿物质主要来源于前寒武系变质岩,造山作用引起构造-岩浆活动,区域变质作用造成流体的活化,并萃取围岩中的成矿物质,最终在构造有利部位富集形成金矿床。 |
| 英文摘要: |
| The Bayuda area is located in Nile River State, north Sudan, in which one medium-sized gold deposit and seven exploration targets are located recently. This paper mainly deals with the geological conditions of gold deposits in Bayuda area, and the geochemical characters of ore and wall-rock of Hagagia gold deposit. The ore-forming process is divided into the hydrothermal, supergene weathering-sedimentary stages. The authors consider that the gold deposit in Bayuda area is formed by meso-epithermal metamorphic fluid and controlled by ductile shear zone and classified into orogenic-type gold deposit. The Proterozoic metamorphic rocks supply ore materials. Orogenesis causes tectonomagmatism. Regional metamorphism mobilizes hydrothermal fluid which extracts ore elements from the country rock and deposited the elements at favorable tectononic space. |
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