Experimental Noble Metal Geochemistry

实验贵金属地球化学

• 批准号: 0074036
• 负责人: Kevin Righter
• 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: 2000
• 资助国家: 美国
• 起止时间: 2000-07-01 至 2004-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0074036&HistoricalAwards=false
• 关键词: Experimental; Noble; Metal; Geochemistry

DrakeEAR-0074036This project proposes an experimental program to continue an investigation of the solubility and mineral/melt partitioning behavior of highly siderophile elements. The proposed work bears directly on the use of Re-Os, Pt-Os isotopes and platinum-group elements (PGEs) as petrogenetic tracers of Earth evolution and igneous processes as well as thermodynamics and economic geology of the noble metals. The major scientific goals of this continuing program are to quantify the geochemistry of the elements Re, Pt, Os, and other PGEs with respect to their siderophile and lithophile behavior. An understanding of the geochemical systematics of noble metal parent-daugther isotope pairs is essential in interpreting these systems in terms of major active Earth processes as well as in the accretion and primordial differentiation of the early Earth.

本项目提出了一个实验方案，以继续研究高亲铁元素的溶解度和矿物/熔体分配行为。建议的工作直接关系到使用Re-Os， Pt-Os同位素和铂族元素（PGEs）作为地球演化和火成岩过程的岩石示踪剂，以及贵金属的热力学和经济地质学。这个持续项目的主要科学目标是量化Re、Pt、Os和其他PGEs元素的亲铁和亲石行为的地球化学特征。贵金属母子同位素对地球化学系统的理解对于解释这些系统在主要的地球活动过程以及早期地球的吸积和原始分异方面是必不可少的。