The Distribution of Hydrogen and its Isotopes in the Upper Mantle

上地幔中氢及其同位素的分布

• 批准号: 9304548
• 负责人: Phillip Ihinger
• 金额: $ 3.5万
• 依托单位: Yale University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1993
• 资助国家: 美国
• 起止时间: 1993-06-15 至 1994-11-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9304548&HistoricalAwards=false
• 关键词: Distribution; Hydrogen; its; Isotopes; Upper

Infrared spectroscopic measurements demonstrate that hydrogen is structurally bound within all of the major "anhydrous" mantle minerals as an OH- for O= substitution in the crystal lattice. This substitution may represent the primary storage mechanism for water in the upper mantle. This proposal seeks to carry out analyses on a variety of samples to determine the hydrogen isotopic composition of nominally anhydrous minerals in relation to other geochemical parameters. These results will provide insights into the nature of water in the mantle and will set constraints on the earth's degassing, water recycling, and the conditions associated with the formation of a variety of mantle suites.

红外光谱测量表明， 氢在结构上结合在所有主要的 “无水”地幔矿物作为OH-取代O= 晶格 这种替代可以代表 上地幔水的主要储存机制。 这项建议旨在对各种 样品来确定氢同位素组成 相对于其他矿物，名义上无水矿物 地球化学参数 这些结果将提供见解 进入地幔中的水的性质， 限制地球的脱气，水循环， 与形成各种 壁炉套房