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.

该项目将使磷灰石成为研究大陆地壳演化的新工具。地壳塑造了大气层和海洋的组成，通过提供氧气和营养物质影响了生命的进化。然而，大陆地壳何时以及如何形成仍然是一个核心问题。目前的大陆地壳发展模型依赖于矿物锆石。然而，锆石只记录了岩石演化的历史。为了解决这个偏差，我们将使用矿物磷灰石，它形成于进化程度较低的岩石中。我们将开发一个碎屑磷灰石数据库的Pb-Nd（模型）年龄，并将其与锆石记录，以提供一个更全面的描述我们的星球是如何发展的。