Diamonds – Time Capsules of Ancient Mantle Volatiles and the Key to Dynamic Earth Evolution

钻石 — 古代地幔挥发物的时间胶囊和地球动态演化的关键

• 批准号: DP140101976
• 负责人: Dr Masahiko Honda
• 金额: $ 25.86万
• 依托单位: The Australian National University
• 依托单位国家: 澳大利亚
• 项目类别: Discovery Projects
• 财政年份: 2014
• 资助国家: 澳大利亚
• 起止时间: 2014-01-01 至 2018-12-31
• 项目状态: 已结题
• 来源: https://dataportal.arc.gov.au/RGS/Web/Grants/DP140101976
• 关键词: Diamonds; Time; Capsules; Ancient; Mantle

This project aims to reconcile the radically different views on the structure of the Earth’s mantle, based on geochemical (mostly noble gas) and geophysical data. This objective will be addressed through innovative noble gas analyses of well-characterised diamond samples, including gem-stones used for previous dating studies. In combination with carbon isotopic results, this information will be used to constrain the structure and temporal/spatial evolution of the Earth’s mantle. A related outcome will be an improved understanding of the mantle source regions of diamonds and diamond formation.

该项目旨在根据地球化学（主要是惰性气体）和地球物理数据，调和关于地幔结构的截然不同的观点。这一目标将通过创新的稀有气体分析来实现，这些分析包括对以前用于测年研究的宝石进行的分析。结合碳同位素结果，这些信息将被用来约束地球地幔的结构和时空演化。一个相关的成果将是更好地了解钻石和钻石形成的地幔源区。