Experimental Geochemistry of Rhenium and the Platinum-Group Elements

铼和铂族元素的实验地球化学

• 批准号: 9706024
• 负责人: Michael Drake
• 金额: $ 27.37万
• 依托单位: University of Arizona
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1997
• 资助国家: 美国
• 起止时间: 1997-07-01 至 2001-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9706024&HistoricalAwards=false
• 关键词: Experimental; Geochemistry; Rhenium; Platinum; Group

9706024 Drake This project addresses the geochemistry of highly siderophile elements in silicate systems of Earth's interior. The PIs will carry out an experimental program to investigate the solubility and mineral/melt partitioning behavior of noble siderophile elements. The major scientific goals are to quantify: (1) the geochemical behavior of Re and Os, elements important for chronology and as tracers of planetary evolution; (2) the geochemical behavior of the platinum group elements in general. The PIs will target the Re-Os isotopic system and conduct systematic studies if crystal/melt partitioning of Re and Os. A second approach involves systematic solubility investigations to quantify the chemical controls on highly siderophile element solubilities in lithophile phases. Experiments will be carried out in one-atmosphere gas-mixing furnaces, piston-cylinder apparatus, and multi-anvil apparatus.

9706024德雷克这个项目解决了地球内部硅酸盐系统中高度亲铁元素的地球化学。 PI将开展一项实验计划，以研究贵金属亲铁元素的溶解度和矿物/熔体分配行为。 主要的科学目标是量化：（1）Re和Os的地球化学行为，这些元素对年代学很重要，并作为行星演化的示踪剂;（2）一般铂族元素的地球化学行为。 PI将针对铼-锇同位素系统，并进行系统的研究，如果晶体/熔体分配的Re和Os。第二种方法涉及系统的溶解度调查，以量化的化学控制亲石相高度亲铁元素的溶解度。 实验将在单气氛气体混合炉、活塞-气缸装置和多砧装置中进行。