Acquisition of a Multi-Anvil Press

收购多砧压机

• 批准号: 0444067
• 负责人: David Jenkins
• 金额: $ 14.8万
• 依托单位: SUNY at Binghamton
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2005
• 资助国家: 美国
• 起止时间: 2005-12-15 至 2007-11-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0444067&HistoricalAwards=false
• 关键词: Acquisition; Multi; Anvil; Press

EAR-0444067JenkinsThis proposal is for the acquisition of a multi-anvil press for the primary purpose of studying mineralogical reactions and mineral-composition variations relevant to ultra-high-pressure (UHP) metamorphism. Several projects have been identified that will be the initial focus of research. First, the upper-pressure stability of glaucophane, which breaks down to talc and jadeite, will be examined to try to resolve existing discrepancies in the location of this boundary. This reaction boundary defines the upper-pressure limit of the blueschist metamorphic facies and may correspond in pressure to the onset of UHP metamorphism (defined by the presence of coesite). Second, univariant reactions defining the conversion of the low-pressure assemblage zoisite + diopside-rich clinopyroxene to the high-pressure assemblage lawsonite + grossular-rich garnet in the system CaO-MgO-Al2O3-SiO2-H2O will be investigated to better understand the pressures at which lawsonite-bearing eclogites occur. Third, the possible expansion of the stability field of zoisite-bearing eclogites, limited by the reaction 6 zoisite = 4 grossular + 5 kyanite + coesite + 3 H2O, resulting from the addition of ferric iron to the above system will be examined. The latter two projects will help delimit the stability field of zoisite (or epidote) in eclogites from UPH terranes. This mineral may be an important host for returning water to Earth's mantle. The multi-anvil press requested in this proposal will support research on many other projects relevant to UHP metamorphism. The broader impacts of this proposal are (1) improving the research infrastructure at this institution by allowing research at pressures and temperatures that were not previously attainable and (2) by providing undergraduate and graduate students opportunities to conduct research relevant to planetary interiors.

EAR-0444067JENKINSTHIS TIMOSAL是为了获得多动力压力机，目的是研究与超高压（UHP）变质有关的矿物质反应和矿物质组成变化。 已经确定了几个项目，这将是研究的最初重点。 首先，将检查谷歌的上压力稳定性，该高压素（分解为滑石粉和翡翠）将进行检查，以试图解决该边界位置的现有差异。 该反应边界定义了布鲁斯切斯特变质相的上压力极限，并且可能在压力上与UHP变质的发作（由coesite的存在定义）。 其次，定义低压组合ZOISITE +富含Diopside的clinopyroxene与高压组合Lawsonite + Grossular-Grossular富含石榴石的转化的单变量反应，将对哪些律师事物的压力进行研究，以更好地了解这些压力。 第三，将检查由反应6 Zoisite = 4 Groscular + 5 kyanite + Coesite + 3 H2O的稳定场的稳定场的可能膨胀，这是由于将铁铁添加到上述系统中所致。 后两个项目将有助于在UPH Terranes的Eclogite中划定Zoisite（或Epidote）的稳定领域。 这种矿物可能是将水返回地球地幔的重要主机。 本提案中要求的多媒体新闻界将支持对与UHP变质有关的许多其他项目的研究。 该提案的更广泛影响是（1）通过允许在以前无法达到的压力和温度下进行研究来改善该机构的研究基础设施，以及（2）通过为本科生和研究生提供与行星室内装饰相关的研究的机会。