Identifying the secular evolution of chemical heterogeneity in the mantle as probed by deep mantle plumes

该项目旨在重点研究与深部地幔热柱有关的熔融模式和时间尺度。这些熔岩在地球历史上形成了大量的岩浆体和火山泛滥的玄武岩省，并记录了地球地幔的长期化学演化。选择性火成岩含有高品位贵金属矿床，与因大气火山污染而发生的与缺氧海洋事件有关的全球大灭绝不谋而合。该项目旨在提供响应地幔动力学的行星表面演化知识，限制羽流形成的熔体中金属在矿石质量中的富集过程，并可能有助于理解大规模火山喷发与气候变异性之间的关系。

This project aims to focus on modes and timescales of melting associated with deep mantle plumes. These melts form massive magmatic bodies and volcanic flood basalt provinces throughout Earth’s history and record the secular chemical evolution of the Earth’s mantle. Selective igneous bodies contain high-grade noble metal deposits and coincide with global mass extinction linked to anoxic ocean events in response to atmospheric volcanic pollution. This project aims to provide knowledge of planetary surface evolution in response to mantle dynamics, place constraints on enrichment processes of metals in ore quality in plume-derived melts, and may help understandings of the relation between massive volcanic eruptions and climate variability.