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: 9417706
• 负责人: David Walker
• 金额: $ 46.4万
• 依托单位: Columbia University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1995
• 资助国家: 美国
• 起止时间: 1995-02-01 至 1999-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9417706&HistoricalAwards=false
• 关键词: Experimental; Petrology; Lunar; Planetary; Igneous

9417706 Walker The aim of this research project is to reach an understanding of planetary differentiation by igneous processes. Methods of study to be used include melting and/or dehydration experiments, petrographic and microprobe studies and theoretical and numerical modeling. Projects to be undertaken include: (a) exploration of liquid compositional dependence of the partitioning of siderophile elements between metal and silicate liquids - relative to planetary core formation's impact upon mantle siderophile element abundances, (b) development of a P-T-X saturation model for natural liquids in equilibrium with garnet-structured crystals, and (c) improvement of the doping properties, reliability, and availability of the LaCrO3 semiconductor heaters - relevant to the needs of this study and a wider community for methods of improved experimental heating with low thermal gradients.

[04:17 . 706]沃克这个研究项目的目的是通过火成岩作用来了解行星的分异。研究方法包括熔融和/或脱水实验、岩石学和显微探针研究以及理论和数值模拟。拟进行的项目包括：(a)探索亲铁元素在金属和硅酸盐液体之间分配的液体组成依赖性——相对于行星核形成对地幔亲铁元素丰度的影响；(b)发展了具有石榴石结构晶体的平衡天然液体的P-T-X饱和模型；(c)改进了掺杂性能和可靠性。LaCrO3半导体加热器的可用性-与本研究和更广泛的社区对低热梯度改进实验加热方法的需求相关。