Collaborative Research: Hydrogen Partitioning and Fe3+ Exchange in Mantle Minerals: Effects on Mechanical Behavior

合作研究：地幔矿物中的氢分配和 Fe3 交换：对机械行为的影响

• 批准号: 9305187
• 负责人: Stephen Mackwell
• 金额: $ 19.96万
• 依托单位: Pennsylvania State Univ University Park
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1994
• 资助国家: 美国
• 起止时间: 1994-02-01 至 1998-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9305187&HistoricalAwards=false
• 关键词: Collaborative; Research; Hydrogen; Partitioning; Fe3+

9305187 Mackwell Only from an understanding of the way in which hydrous species partition at upper mantle conditions will it be possible to interpret mechanical property measurements. This program will include static experiments on aggregates of mantle minerals under high pressure and temperature conditions, infrared measurements to characterize the partitioning of water-derived species between the phases, and Mossbauer spectroscopy measurements to monitor changes in the iron valence during uptake of water. This last technique is particularly important in that it may allow us to use iron ionic ratios and infrared spectroscopy on minerals exposed at the Earth's surface to infer water contents and water partitioning at depth. Finally, the inferred effects of this partitioning behavior will be investigated by performing deformation experiments on multiphase aggregates under wet conditions. ***

9305187 Mackwell 只有了解含水物质在​​上地幔条件下的分配方式，才有可能解释机械特性测量结果。 该计划将包括在高压和高温条件下对地幔矿物聚集体进行静态实验、表征水源物质在各相之间分配的红外测量、以及监测吸收水期间铁价变化的穆斯堡尔光谱测量。 最后一项技术特别重要，因为它可以让我们对地球表面暴露的矿物使用铁离子比率和红外光谱来推断水含量和水在深处的分配。 最后，将通过在潮湿条件下对多相骨料进行变形实验来研究这种分配行为的推断效果。 ***