Acquisition of a Laser Fluorination System for Oxygen Isotopes at IIRMES, California State University, Long Beach

加州州立大学长滩分校 IIRMES 采购氧同位素激光氟化系统

• 批准号: 0949044
• 负责人: Gregory Holk
• 金额: $ 3.75万
• 依托单位: California State University-Long Beach Foundation
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2010
• 资助国家: 美国
• 起止时间: 2010-05-01 至 2012-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0949044&HistoricalAwards=false
• 关键词: Acquisition; Laser; Fluorination; System; Oxygen

0949044HolkThis award will be used to acquire materials for fabricating a laser fluorination system to prepare samples for oxygen isotope measurements. The laser fluorination system will allow small-scale isotopic variation studies, increase sample throughput, and allow isotope measurements on ?resistant? minerals. Isotopes will be used to understand the role of aqueous fluids in the genesis of magmas, hydrothermal systems, sedimentary basins, hydrothermal vent systems, shallow subduction zones, and in groundwater circulation. Water-rock interaction history will be applied to understand metamorphic rock exhumation. Laser fluorination would allow oxygen isotope measurements on individual minerals within rocks, allowing better constraints on geochronologic cooling. As part of the Geoscience Diversity Enhancement Program (GDEP), samples from the Catalina Schist will be analyzed by the new system to better understand petrologic and tectonic evolution. Oxygen isotope data from thermally-altered intrusions will be used to establish the degree of isotopic disequilibrium to estimate water-rock ratios and duration of hydrothermal activity in the Southern White Pine Range in Nevada. In addition, fluid inclusions will be analyzed using laser fluorination to reveal silica sources. Stable isotopes will be used to source historic gunflints and paleoindian quartzite tools. Biogenic silica and sediment organic matter will be analyzed and used as a proxies to estimate past oxygen and salinity concentrations. This fluorination system would allow CSULB to provide a system-wide facility for geology and archeology isotope and trace elements (GAITE) measurements. The instrument will be used for undergraduate and graduate-level student training. CSULB is a Hispanic Serving Institution and is highly ranked for conferring minorities with bachelors. The Institute for Integrative Research in Materials, Environments, and Society (IIRMES) was formally established in 2004 with a purpose to promote intellectual exchange and foster interdisciplinary collaborations among faculty and students with different educational and research backgrounds. The PI will be responsible for building the vacuum lines The instruments will be installed at the CSULB stable isotope laboratory in the IIRMES facility. The facility will operate as fee-based for outside samples. ***

0949044 Holkthis奖将用于获取用于制造激光氟化系统的材料，以准备氧同位素测量的样品。激光氟化系统将允许小规模的同位素变异研究，增加样品吞吐量并允许对抗性的同位素测量？矿物质。同位素将用于了解水流体在岩浆，水热系统，沉积盆地，水热系统，浅俯冲带和地下水循环中的作用。水摇滚相互作用的历史将用于了解变质岩石发掘。激光氟化将允许对岩石中各个矿物质的氧同位素测量，从而更好地限制地质学冷却。作为地球科学多样性增强计划（GDEP）的一部分，新系统将对Catalina Schist的样本进行分析，以更好地了解岩石学和构造演化。来自变热侵入的氧同位素数据将用于建立在内华达州南部白松范围内估计水摇滚比的同位素不平衡程度和水热活动的持续时间。此外，将使用激光氟化来分析流体夹杂物以揭示二氧化硅来源。稳定的同位素将用于采购历史性的炮弹和古印度石英岩工具。将分析生物二氧化硅和沉积物有机物，并用作估计过去的氧气和盐度浓度的代理。这种氟化系统将使CSULB能够为地质和考古同位素和微量元素（GAITE）测量提供全系统范围的设施。该乐器将用于本科和研究生级的学生培训。 Csulb是一家西班牙裔服务机构，并以与单身汉一起授予少数民族的高度排名。材料，环境和社会（IIRMES）方面的综合研究研究所在2004年正式成立，目的是促进知识交流并促进具有不同教育和研究背景的教师和学生之间的跨学科合作。 PI将负责构建真空线，该仪器将安装在IIRMES设施中的Csulb Stable同位素实验室。该设施将以基于费用的外部样本运行。 ***