Spatial distribution and genetic models of Cu-Ni-PGE systems associated with the Sudbury structure

与萨德伯里结构相关的 Cu-Ni-PGE 系统的空间分布和遗传模型

• 批准号: 381554-2009
• 负责人: Jugo, Pedro
• 金额: $ 3.58万
• 依托单位: Laurentian University of Sudbury
• 依托单位国家: 加拿大
• 项目类别: Collaborative Research and Development Grants
• 财政年份: 2014
• 资助国家: 加拿大
• 起止时间: 2014-01-01 至 2015-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=550226
• 关键词: Spatial; distribution; genetic; models; Cu

Sudbury is a unique place on Earth. The Sudbury basin is a deformed meteoritic impact crater (now filled with sedimentary rocks) that was created 1,850 million years ago. The impact of the meteor produced a crater estimated at 200 km diameter and the energy released on impact melted a large volume of rocks. Cooling of these rocks resulted in igneous rocks grouped as the Sudbury Igneous Complex (SIC). Associated with these rocks and with the impact structure are large reserves of (Cu), nickel (Ni), gold (Au) and metals of the platinum group elements (PGE), such as platinum (Pt) and palladium (Pd). These metals were mobilized by sulfur-rich liquids (sulfide melts) formed at high temperatures and also by hot aqueous fluids (hydrothermal fluids) circulating around the superheated impact crater. However, the distribution of economic concentration of metals (for the extraction and industrial development) is complicated because this ancient impact site has been affected by deformation, metamorphism and circulation of hydrothermal fluids in several occasions after the crater was formed and the SIC was completely cooled. Our interest, in particular, is focused on the distribution of Cu-Ni-PGE mineralization, commonly known as "footwall" deposits, which have complex distribution and geometries and are difficult to locate around the Sudbury Structure. The objective of this project is to determine how the combination of magmatic, metamorphic, and hydrothermal processes control the current distribution of Cu-Ni-PGE ores. The goal is to develop methods, based on detailed mapping and analysis of existing rocks, that can be used as exploration vectors to find Cu-Ni-PGE resources. The Canadian economy is partly resource based and the mining sector contributes significantly to the Gross Domestic Product (GDP) of Canada. In addition, extraction of metals is an essential part of industrialization and development worldwide. Because mining is prone to cyclical fluctuations in metals prices, diversification of metals that can be extracted from one mining district provides a stronger economic foundation and minimizes the impact of metal price volatility.

萨德伯里（Sudbury）是地球上一个独特的地方。萨德伯里盆地是一个变形的陨石冲击火山口（现已充满沉积岩），是18.5亿年前创建的。流星的影响产生的火山口估计直径为200 km，而在撞击上释放的能量融化了大量岩石。这些岩石的冷却导致火成岩岩石分为萨德伯里火成岩复合物（SIC）。与这些岩石和冲击结构相关的是（Cu），镍（Ni），黄金（AU）和铂类元素（PGE）的金属的大储量，例如铂（PT）和钯（PD）。这些金属通过在高温下形成的富含硫的液体（硫化物熔体），还通过在过热撞击火山口周围循环的热水性液（热液水液）动员。然而，金属的经济浓度的分布（用于提取和工业发展）是复杂的，因为在形成火山口后的几次，这种古老的影响部位受到变形，变质和水热液的循环的影响，并且SIC完全冷却。尤其是我们的利益集中在Cu-ni-pge矿化的分布上，通常称为“脚壁”沉积物，它们具有复杂的分布和几何形状，很难在萨德伯里结构周围定位。该项目的目的是确定岩浆，变质和水热过程的组合如何控制Cu-Ni-PGE矿石的当前分布。目的是根据现有岩石的详细映射和分析来开发方法，可以用作探索向量来找到Cu-Ni-Pge资源。加拿大经济部分是基于资源的，采矿部门对加拿大的国内生产总值（GDP）做出了重大贡献。此外，金属的提取是全球工业化和发展的重要组成部分。由于采矿容易产生金属价格的周期性波动，因此可以从一个采矿区提取的金属的多样化提供了更强大的经济基础，并最大程度地减少了金属价格波动的影响。