Experimental studies of the Earth's mantle

地幔的实验研究

• 批准号: RGPIN-2017-03914
• 负责人: Luth, Robert
• 金额: $ 1.97万
• 依托单位: University of Alberta
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2017
• 资助国家: 加拿大
• 起止时间: 2017-01-01 至 2018-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=634014
• 关键词: Experimental; studies; Earth; mantle

Diamonds form in the Earth’s mantle at depths of > ~130 km and temperatures > ~ 900°C. But there remain many questions about how and why they form, and what they tell us about the mantle in which they form. My research aims to address these questions, and addresses the behaviour of carbon in the mantle more broadly, because we need to understand the conditions in which carbon will be stable as diamond rather than as crystalline carbonate or dissolved in a fluid or melt. By reproducing the pressures and temperatures in the Earth’s mantle at diamond-stable conditions in the laboratory, we can explore these questions in a way complementary to the observations that other researchers make on natural diamonds and their fluid and mineral inclusions.

钻石形成于地幔深处> ~130 km，温度> ~ 900°C。但是，关于它们如何形成以及为什么形成，以及它们告诉我们关于它们形成的地幔的信息，仍然存在许多问题。我的研究旨在解决这些问题，并更广泛地解决碳在地幔中的行为，因为我们需要了解碳作为金刚石而不是结晶碳酸盐或溶解在流体或熔体中的稳定条件。通过在实验室中重现钻石稳定条件下地球地幔中的压力和温度，我们可以探索这些问题，以补充其他研究人员对天然钻石及其流体和矿物包裹体的观察。