Experimental and empirical insight into melting of the early Earth's mantle

对早期地幔融化的实验和实证见解

• 批准号: DP220100136
• 负责人: Prof Balz Kamber
• 金额: $ 29.44万
• 依托单位: Queensland University of Technology
• 依托单位国家: 澳大利亚
• 项目类别: Discovery Projects
• 财政年份: 2022
• 资助国家: 澳大利亚
• 起止时间: 2022-07-13 至 2025-07-12
• 项目状态: 未结题
• 来源: https://dataportal.arc.gov.au/RGS/Web/Grants/DP220100136
• 关键词: Experimental; empirical; insight; into; melting

The early Earth's mantle produced melt at much higher temperature than today, creating rocks with unique chemistries and mineralogies. But pressing knowledge gaps about hot mantle melting remain. The aim of this project is to generate new experimental and empirical knowledge to help closing these gaps by: (i) conducting high pressure experiments to refine phase-composition relationships and element partitioning; (ii) quantifying mineral fabrics in cratonic peridotites to understand the movement of early continents; and (iii) constructing the first petrological deep time model for greenstone belt volcanic rocks. The expected outcomes are better models for the early Earth's melting and tectonic regimes and insight into the emergence of land.

早期地球的地幔在比今天高得多的温度下产生熔体，创造出具有独特化学成分和矿物的岩石。但是，关于热地幔熔融的紧迫知识缺口仍然存在。该项目的目的是产生新的实验和经验知识，以帮助缩小这些差距： (i)进行高压实验以改进相组成关系和元素分配; (ii)量化岩石橄榄岩中的矿物结构，以了解早期大陆的运动; (iii)首次建立了绿岩带火山岩岩石学深时模型。 预期的结果是更好的模型，为早期地球的融化和构造制度和洞察土地的出现。