Recycling of elements in subduction zones and the metal fertility of magmas in volcanic arcs

俯冲带元素的循环和火山弧岩浆的金属肥力

• 批准号: RGPIN-2016-05040
• 负责人: Hattori, Keiko
• 金额: $ 2.4万
• 依托单位: University of Ottawa
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2017
• 资助国家: 加拿大
• 起止时间: 2017-01-01 至 2018-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=633696
• 关键词: Recycling; elements; subduction; zones; metal

Volcanoes in magmatic arcs discharge large quantities of volatile elements; associated hydrothermal activity commonly forms accumulations of metallic minerals, such as porphyry deposits that are the principal source of world copper. The close association of such metallic deposits to volcanoes indicates a genetic link between mineralization and magmas in magmatic arcs. These elements (volatiles, metals and many other elements concentrated in the deposits) have a low abundance in the mantle where these magmas are generated, whereas they are abundant in surficial environments (

岩浆弧中的火山排放大量挥发性元件；相关的水热活动通常形成金属矿物质的积累，例如是世界铜的主要来源的斑岩沉积物。这种金属沉积物与火山的密切关联表明岩浆弧中的矿化与岩浆之间存在遗传联系。这些元素（挥发物，金属和许多集中在沉积物中的元素）在产生这些岩浆的地幔中具有较低的丰度，而它们在表面环境中很丰富（它们富含