Experimental Petrology of Lunar and Planetary Igneous Rocks

月球和行星火成岩的实验岩石学

• 批准号: 9813447
• 负责人: David Walker
• 金额: $ 33.48万
• 依托单位: Columbia University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1998
• 资助国家: 美国
• 起止时间: 1998-05-01 至 2001-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9813447&HistoricalAwards=false
• 关键词: Experimental; Petrology; Lunar; Planetary; Igneous

9813447 Walker The goal of this research is to gain an understanding of planetary differentiation by igneous processes. Methods of study include: (1) melting, element partitioning, and /or decomposition studies of planetary materials and related synthethic compositions using experimental petrology; (2) petrographic and microprobe studies of experimental products and natural samples as well as theoretical and numerical modeling of magmatic systems; (3) technique development for studies of high temperature and pressure phase equilibria, element partitioning and materials behavior. The following projects will be undertaken: (a) exploration of the P, T, and liquid compositional dependence of the partitioning of very highly siderophile elements between melt and silicate liquids; (b) study of the volume of the garnet solution series at simultaneously high P and T by synchrotron XRD; (c) determination of high P, T, volumes of selected fluid substances by tracking relevant crystal decomposition curves using sychrotron XRD; (d) improvement of the doping properties, reliability, and X-ray transparency of semiconductor heaters based on Al carbide and nitride composites; (e) completion of the data reduction of epithermal neutron resonance pyrometry measurements of the effect of P on thermocouple emf.

9813447 Walker 这项研究的目标是了解火成岩过程引起的行星分化。 研究方法包括：（1）利用实验岩石学对行星材料和相关合成成分进行熔化、元素分配和/或分解研究； (2) 实验产品和天然样品的岩相学和显微探针研究以及岩浆系统的理论和数值模拟； (3)高温高压相平衡、元素分配和材料行为研究的技术开发。 将开展以下项目： (a) 探索极高亲铁元素在熔体和硅酸盐液体之间分配的 P、T 和液体成分依赖性； (b) 通过同步加速器 XRD 研究石榴石溶液系列在同时高 P 和 T 下的体积； (c) 通过使用同步加速器 XRD 跟踪相关晶体分解曲线来确定选定流体物质的高 P、T、体积； (d) 改善基于碳化铝和氮化铝复合材料的半导体加热器的掺杂性能、可靠性和X射线透明度； (e) 完成 P 对热电偶电动势影响的超热中子共振测温测量的数据缩减。