Isotopic tracers for sulfide formation applied to offset dykes of the Sudbury basin, Ontario

用于硫化物形成的同位素示踪剂应用于安大略省萨德伯里盆地的偏移堤坝

• 批准号: 498408-2016
• 负责人: Bouvier, Audrey
• 金额: $ 1.82万
• 依托单位: University of Western Ontario
• 依托单位国家: 加拿大
• 项目类别: Engage Grants Program
• 财政年份: 2016
• 资助国家: 加拿大
• 起止时间: 2016-01-01 至 2017-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=606574
• 关键词: Isotopic; tracers; sulfide; formation; applied

The Sudbury Igneous Complex (SIC), known for its Cu-Ni-PGE ores, is an igneous complex formed from a partial melt of the crust as a result of an impact event ~1.85 billion years ago. Although Sudbury has seen active mining for over a century, important questions still remain about the formation of ore deposits within the complex. One being, what is the origin, history, and source of sulfide minerals within offset dikes found at the Sudbury Igneous Complex? Several of these dykes are currently explored by Wallbridge Mining Company Limited. Little is known so far about the conditions for sulfide migration from the main mass. Using stable Fe-Cu-Ni isotopes, we will identify the potential sources, oxidation states, hydrothermal history, and

萨德伯里火成岩杂岩（SIC）以其Cu-Ni-PGE矿石而闻名，是约18.5亿年前撞击事件导致地壳部分熔融而形成的火成岩杂岩。尽管萨德伯里的采矿活动已经持续了一个多世纪，但有关矿床形成的重要问题仍然存在。首先，在萨德伯里火成岩杂岩中发现的偏移岩脉中硫化物矿物的起源、历史和来源是什么？其中几条堤坝目前由华桥矿业有限公司勘探。到目前为止，人们对硫化物从主块体迁移的条件知之甚少。利用稳定的Fe-Cu-Ni同位素，我们将确定潜在的来源，氧化态，热液历史和