Development of reliable proxies to distinguish significantly mineralized sedimentary basins, enhancing the likely discovery of new sediment-hosted cop

开发可靠的代理来区分显着矿化的沉积盆地，提高新沉积物沉积盆地发现的可能性

• 批准号: 2291642
• 金额: --
• 依托单位: University of Southampton
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2019
• 资助国家: 英国
• 起止时间: 2019 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2291642
• 关键词: Development; reliable; proxies; distinguish; significantly

Hydrothermal ore deposits are the principal source of the world's metals. They form within fluid flow regimes which extract metals from source rocks or magmas in the Earth's crust, transport them as complexes in solution, and precipitate them in a limited rock volume. Sedimentary basins are one environment in which such processes produce giant deposits, such as the Cu-Co deposits of Central Africa which annually produces respectively 15% and 75% of these key, technology-enabling metals. However, such remarkably-endowed basins are apparently rare although many potential analogues are known. Given recent developments in theoretical, experimental and analytical geochemistry, the aim of this PhD project is to develop: (i) reliable geochemical proxies for distinguishing "fertile" sedimentary basins at the district to deposit scale, and proximity to ore; and (ii) use these data to test and refine current hypotheses for basin-scale fluid flow mechanisms and sediment-hosted ore formation, incorporating advances developed in the hydrocarbon sector.

热液矿床是世界金属的主要来源。它们在流体流动状态下形成，从地壳的源岩或岩浆中提取金属，将它们作为复合物输送到溶液中，并将它们沉淀在有限的岩石体积中。沉积盆地是此类过程产生巨大矿床的环境之一，例如中非的铜钴矿床，每年分别生产这些关键的技术支持金属的 15% 和 75%。然而，尽管已知许多潜在的类似盆地，但这种资源丰富的盆地显然很罕见。鉴于理论、实验和分析地球化学的最新发展，该博士项目的目的是开发：（i）可靠的地球化学代理，用于区分该地区的“肥沃”沉积盆地的沉积规模以及与矿石的接近程度； (ii) 利用这些数据来测试和完善当前关于盆地规模流体流动机制和沉积物矿藏形成的假设，并结合碳氢化合物领域取得的进展。