MRI: Acquisition Of A Modern Electron Microprobe At The University of Maine

MRI：在缅因大学购买现代电子显微探针

• 批准号: 0116235
• 负责人: Charles Guidotti
• 金额: $ 47.5万
• 依托单位: University of Maine
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2001
• 资助国家: 美国
• 起止时间: 2001-09-01 至 2003-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0116235&HistoricalAwards=false
• 关键词: MRI; Acquisition; Modern; Electron; Microprobe

0116235GuidottiThis award, made through the Major Research Instrumentation (MRI) Program, provides support for the acquisition of a state-of-the-art electron microprobe (EMP) for the microchemical characterization of geological materials. A new EMP will replace an aging (vintage 1981) ARL SEMQ in the Department of Geological Sciences at the University of Maine. The instrument will facilitate research on a range of topics in metamorphic petrology including, the speciation of Fe and distribution of OH- in metapelites, and light element (i.e. Li, B, Be) partitioning in granulite facies rocks. Research in paleoclimatology will also be enhanced by this instrument. The probe will be used to analyze volcanic glass shards in ice core samples for trace and major element compositions. Coupled with analyses of suspected source tephras, such chemical analyses offer the strong possibility of verifying the provenance of ice core tephra and therefore relating these discrete events to climate proxies also recorded simultaneously in ice cores. This facility will be the only modern EMP in the state of Maine and will serve not only the needs of faculty and students from several departments at the University of Maine , but also the needs of faculty and students from nearby regional institutions (i.e. Bowdoin, Univ. of Southern Maine, Bates).***

0116235Guidotti 该奖项是通过重大研究仪器 (MRI) 计划颁发的，为购买最先进的电子微探针 (EMP) 提供支持，用于地质材料的微化学表征。 新的 EMP 将取代缅因大学地质科学系老化的（1981 年老式）ARL SEMQ。 该仪器将促进变质岩石学一系列主题的研究，包括变泥岩中 Fe 的形态和 OH- 的分布，以及麻粒岩相岩石中的轻元素（即 Li、B、Be）分配。 该仪器也将加强古气候学研究。 该探头将用于分析冰芯样本中的火山玻璃碎片的痕量和主要元素成分。 结合对可疑来源火山灰的分析，此类化学分析提供了验证冰芯火山灰来源的强大可能性，因此将这些离散事件与也在冰芯中同时记录的气候代理相关联。 该设施将是缅因州唯一的现代化 EMP，不仅可以满足缅因大学多个系的教职员工和学生的需求，还可以满足附近地区机构（即鲍登、南缅因大学、贝茨）的教职员工和学生的需求。***