Chemical fingerprinting of hydrothermal ore deposit systems

热液矿床系统的化学指纹图谱

• 批准号: RGPIN-2015-05782
• 负责人: Kontak, Daniel
• 金额: $ 1.6万
• 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: 2015
• 资助国家: 加拿大
• 起止时间: 2015-01-01 至 2016-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=590635
• 关键词: Chemical; fingerprinting; hydrothermal; ore; deposit

The research undertaken in this program will address truly fundamental questions about how important types of gold deposits form. Until now, geologists have understood the fluids that carry and deposit gold in both metamorphic and magmatic gold deposits to be ‘low-salinity aqueous-carbonic fluids’ (H2O-CO2±CH4). This description is extremely simple, grossly oversimplifies the complexity of the ore fluids that have been proven to be involved in specific examples of each of the deposit types, and ignores subtleties of fluid composition that may be critical to ore formation. More problematically, this description encourages the assumption that these ore deposit types are similar, even though their fundamental tectonic settings are clearly entirely different. Is it really possible that the ore-depositing fluids in strikingly different geologic settings are so similar and so simple? Answering this question will help geologists understand the fundamental processes behind the formation of gold deposits, a significant part of the Canadian economy for past century, much better, and will also help mineral exploration companies focus their work and their expenditures more efficiently.

该计划中进行的研究将解决有关金矿形成的重要类型的真正基本问题。迄今为止，地质学家认为变质和岩浆型金矿床中携带和存款金的流体是“低盐度水-碳流体”（H_2 O-CO_2 ± CH_4）。这种描述极其简单，严重简化了已被证明与每种存款类型的具体实例有关的矿石流体的复杂性，并忽略了可能对成矿至关重要的流体成分的微妙之处。更有问题的是，这种描述鼓励了这样一种假设，即这些存款类型是相似的，尽管它们的基本构造环境显然完全不同。在截然不同的地质环境中，成矿流体真的可能如此相似和简单吗？探讨这个问题将有助于地质学家更好地理解金矿形成背后的基本过程，金矿是过去世纪加拿大经济的重要组成部分，也将有助于矿产勘探公司更有效地集中工作和支出。