Redox conditions in the earth's upper mantle and the implications for kimberlite petrogenesis, diamond formation and mantle metasomatism.

地球上地幔的氧化还原条件及其对金伯利岩岩石成因、钻石形成和地幔交代作用的影响。

• 批准号: FT0990907
• 负责人: Prof Greg Yaxley
• 金额: $ 48.96万
• 依托单位: The Australian National University
• 依托单位国家: 澳大利亚
• 项目类别: ARC Future Fellowships
• 财政年份: 2010
• 资助国家: 澳大利亚
• 起止时间: 2010-01-04 至 2014-01-03
• 项目状态: 已结题
• 来源: https://dataportal.arc.gov.au/RGS/Web/Grants/FT0990907
• 关键词: Redox; conditions; earth; upper; mantle

Diamonds are an important and high value commodity. Australia is the world's leading producer in terms of carats, due mainly to the massive Argyle deposit in northern Western Australia. Although diamonds form at great depths in the earth, they are accessible at the surface because they are transported by rare volcanic rocks, kimberlites and lamproites. Despite their importance the genesis of these rocks is poorly understood. This research will address this, providing scientific constraints on models for formation of diamonds and their host volcanics, which will directly inform the minerals industry's exploration models. There will be an economic benefit to the nation in terms of more successful outcomes from exploration expenditure.

钻石是一种重要的高价值商品。澳大利亚是世界上主要的克拉生产国，这主要归功于西澳大利亚北方的大量阿盖尔存款。虽然钻石在地球深处形成，但它们可以在地表获得，因为它们是由稀有的火山岩，金伯利岩和钾镁煌斑岩运输的。尽管它们的重要性，这些岩石的成因是知之甚少。这项研究将解决这一问题，为钻石及其宿主火山岩的形成模型提供科学限制，这将直接为矿产行业的勘探模型提供信息。从勘探支出的更成功的结果来看，国家将获得经济利益。