A detrital apatite archive to track crustal growth

用于追踪地壳生长的碎屑磷灰石档案

• 批准号: DP200101881
• 负责人: A/Prof Stijn Glorie
• 金额: $ 22.41万
• 依托单位: The University of Adelaide
• 依托单位国家: 澳大利亚
• 项目类别: Discovery Projects
• 财政年份: 2020
• 资助国家: 澳大利亚
• 起止时间: 2020-01-01 至 2024-11-30
• 项目状态: 已结题
• 来源: https://dataportal.arc.gov.au/RGS/Web/Grants/DP200101881
• 关键词: detrital; apatite; archive; track; crustal

This project will establish apatite as a new tool to study the evolution of the continental crust. The crust shaped the composition of the atmosphere and the oceans with consequences for the evolution of life through the availability of oxygen and nutrients. However, when and how the continental crust was generated remains a core question. Current models for continental crust development rely on the mineral zircon. However, zircons only record the history of evolved rocks. To address this bias we will use the mineral apatite which forms in less evolved rocks. We will develop a detrital apatite database of Pb-Nd (model) ages and integrate this with the zircon record to provide a more holistic description for how our planet developed.

该项目将建立磷灰石作为研究大陆地壳演变的新工具。外壳塑造了大气和海洋的成分，并通过氧气和养分的可用性而影响生命的后果。但是，何时以及如何产生大陆地壳仍然是一个核心问题。当前的大陆壳发展模型依赖于矿物锆石。但是，锆石仅记录进化岩石的历史。为了解决这一偏见，我们将使用以较少进化的岩石形成的矿物磷灰石。我们将开发PB-ND（模型）年龄的碎屑磷灰石数据库，并将其与锆石记录集成在一起，以为我们的星球的发展方式提供更全面的描述。