The link between cratonic roots, redox state, and mantle geodynamics.

克拉通根、氧化还原态和地幔地球动力学之间的联系。

• 批准号: DP210102196
• 负责人: Dr Steven Hansen
• 金额: $ 26.35万
• 依托单位: Macquarie University
• 依托单位国家: 澳大利亚
• 项目类别: Discovery Projects
• 财政年份: 2021
• 资助国家: 澳大利亚
• 起止时间: 2021-12-30 至 2024-12-29
• 项目状态: 已结题
• 来源: https://dataportal.arc.gov.au/RGS/Web/Grants/DP210102196
• 关键词: link; between; cratonic; roots; redox

This project aims to understand the role of Earth's redox state on the geodynamic evolution of continental cratonic roots. Cratonic roots form strong, buoyant rafts upon which Australia's oldest crust and mineral deposits survived. Cratons preserve a record of planetary-scale chemical shifts, including the rise of surface oxygen, but it is unclear how these redox shifts themselves affected lithospheric processes. This project integrates new developments in geochemistry, geophysics, and geodynamics, to map the geochemical state and structure of cratonic roots, aiding mineral exploration, and also shedding light on the processes that modify, mineralise, and sometimes destroy cratonic roots.

该项目旨在了解地球的氧化还原状态对大陆板块根的地球动力学演化的作用。南极根形成了坚固的漂浮筏，澳大利亚最古老的地壳和矿藏就在上面幸存下来。中子保留了行星尺度化学位移的记录，包括表面氧的上升，但尚不清楚这些氧化还原位移本身如何影响岩石圈过程。该项目整合了地球化学，地球物理学和地球动力学的新发展，以绘制岩石根的地球化学状态和结构，帮助矿产勘探，并揭示了修改，矿化，有时破坏岩石根的过程。