CSEDI Initiative: Study of Natural Majorite, An Inter-Laboratory/Technique Comparison (Collaborative Research)

CSEDI 计划：天然多数石的研究，实验室间/技术比较（合作研究）

• 批准号: 9305219
• 负责人: Raymond Jeanloz
• 金额: $ 5.53万
• 依托单位: University of California-Berkeley
• 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: 1994-01-15 至 1995-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9305219&HistoricalAwards=false
• 关键词: CSEDI; Initiative; Study; Natural; Majorite

9305219 Jeanloz This award supports a 2-year collaborative research program intended to elucidate the elastic properties of majorite, the garnet-structured high-pressure phase of pyroxene that is an important constituent of the transition zone in the Earth's mantle. The study would check previous measurements that are controversial, resolving whether or not the properties of majorite are anomalously sensitive to details of composition, crystallographic structure, ordering or origin. Resolving this issue is critical to understanding the geophysical properties of the mantle transition zone. The work would also provide a significant cross-check between two laboratories and between two methods of determining elastic properties on polycrystalline aggregates, Brillouin spectroscopy and static compression. For the first time, natural samples of transition-zone high-pressure phases would be made available to the community for complementary studies through modern techniques of chemical and physical micro- analysis. ***

9305219 Jeanloz该奖项支持一项为期两年的合作研究计划，旨在阐明辉石的弹性性质，这是辉石的石榴石结构的高压相，是地球地幔过渡带的重要组成部分。这项研究将检查之前有争议的测量结果，以确定马约尔铁矿的性质是否对成分、晶体结构、有序或成因的细节异常敏感。解决这一问题对于了解地幔过渡带的地球物理性质至关重要。这项工作还将在两个实验室之间以及确定多晶聚集体弹性性质的两种方法--布里渊光谱分析和静态压缩--之间提供重要的相互核对。将首次向社区提供过渡区高压相的天然样品，以通过现代化学和物理微量分析技术进行补充研究。***