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.

火山块状硫化物 (VMS) 矿体是稀有且极具经济价值的硫化物矿藏，可生产锌、铜、银和金等重要工业金属和贵金属，它们形成于热的裂谷弧和弧后地质动力学环境中。 (>300 C)，演化出的含金属和硫的海水，可能含有来自岩浆（岩浆液）的流体成分，被排放到古代和现代火山内的海底，由于快速冷却，沉积在海底和海底的硫化物矿物 本研究的目的是： 1) 通过了解可能导致 VMS 沉积物形成和位置的控制和过程，例如破火山口的形成。古代和现代海底火山的结构、岩浆、构造和火山演化；2) 评估铂族元素在区分地球动力学环境和岩石成因过程中的应用，并确定铂族元素的潜在作用。硫在生成含金属、岩浆热液中的溶解度；3）培训高素质人员以取代老化的勘探人员，和/或继续研究。​这项研究的结果将使那些研究古代和/或现代海底火山，它将对地壳生长模型产生影响，在加拿大和全球范围内勘探 VMS 矿床的加拿大采矿业将是这项研究的直接受益者，间接受益者也将是这项研究的受益者。加拿大北部非城市采矿社区，其生存、增长和繁荣与成功的勘探和负责任的采矿息息相关。