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 (

岩浆弧中的火山释放出大量的挥发性元素；相关的热液活动通常形成金属矿物的堆积，例如作为世界铜的主要来源的斑岩矿床。这种金属矿床与火山的密切联系表明矿化作用与岩浆弧中的岩浆之间存在遗传联系。这些元素（挥发物、金属和许多其他集中在矿床中的元素）在产生这些岩浆的地幔中丰度较低，而在地表环境中则丰富。