Volcanic, tectonic and magenetic processes, their control on VMS deposits and the architecture and evolution of submarine volcanoes

火山、构造和成岩过程及其对 VMS 沉积物的控制以及海底火山的结构和演化

• 批准号: 105663-2006
• 负责人: Gibson, Harold
• 金额: $ 3.22万
• 依托单位: Laurentian University of Sudbury
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2007
• 资助国家: 加拿大
• 起止时间: 2007-01-01 至 2008-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=366416
• 关键词: Volcanic; tectonic; magenetic; processes; their

Volcanogenic massive sulphide (VMS) ore bodies are rare and incredibly valuable economic accumulations of sulphide minerals from which important industrial and precious metals such as zinc, copper, silver and gold are produced. They form in rifted arc and back-arc geodynamic settings where hot (>300 C), evolved, metal- and sulphur-bearing seawater, perhaps with a fluid component derived from magmas (magmatic fluid), is discharged onto the seafloor within ancient and modern volcanoes and, due to rapid cooling, deposited sulphide minerals at, and immediately below the seafloor. The objectives of this research are to: 1) determine controls and processes, such as caldera formation, that may be responsible for the formation and location of VMS deposits by understanding the architecture, magmatic, tectonic, and volcanic evolution of ancient and modern submarine volcanoes; 2) assess the use of the platinum group elements to discriminate geodynamic environments and petrogenetic processes, and to determine the potential role of sulphur solubility in generating metal-bearing, magmatic hydrothermal fluids; and 3) train highly qualified personnel to replace those in an aging exploration work force, and/or continue in research.  Results of this research will benefit those who study ancient and/or modern seafloor volcanoes, and it will impact on crustal growth models. The Canadian mining industry who explore for VMS deposits in Canada, and globally, will be a direct beneficiary of this research and, indirectly, so will the non-urban, northern Canadian, mining communities whose survival, growth, and prosperity are linked to successful exploration and responsible mining.

火山生成的巨大硫化物（VM）矿体是稀有且极为有价值的硫化物矿物的经济积累，从中产生了重要的工业和贵金属，例如锌，铜，银和黄金。它们以裂谷的弧形和背弧地球动力学环境形成，其中热（> 300 c）进化，金属和含硫磺的海水，也许是岩浆（岩浆液）衍生出的液体成分（岩浆液体），在古代和现代的火山内，以及由于速度冷却，由于硫化物的速度快速而下的硫化矿井，并立即在古代和现代火山内出现。这项研究的目标是：1）确定控制和过程，例如火山口形成，可能是通过了解古代和现代海底火山的建筑，岩浆，构造和火山演化来负责VMS矿床的形成和位置； 2）评估铂群元素的使用来区分地球动力学环境和岩发生过程，并确定硫溶解度在产生金属粘性，岩浆水热液中的潜在作用； 3）培训高素质的人来代替老化的勘探工作人员和/或继续研究。这项研究的结果将使研究古代和/或现代海底火山的人受益，并将影响地壳生长模型。加拿大采矿业探索在加拿大和全球的VMS押金，将是这项研究的直接好处，并间接地将非城市，加拿大北部的矿业社区，其生存，增长和繁荣与成功探索和负责任的采矿有关。