Acquisition of a Laser Fluorination Vacuum Line for Oxygen Isotope Ratio Measurement

获取用于氧同位素比测量的激光氟化真空线

• 批准号: 9910129
• 负责人: Peter Larson
• 金额: $ 3万
• 依托单位: Washington State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2000
• 资助国家: 美国
• 起止时间: 2000-01-15 至 2001-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9910129&HistoricalAwards=false
• 关键词: Acquisition; Laser; Fluorination; Vacuum; Line

9910129LarsonThis grant provides partial support of the costs of acquiring a laser fluorination vacuum line for the stable isotope laboratory at Washington State University. The PI, Peter Larson, has utilized stable isotope analyses of silicate minerals and rocks in his research on high temperature geologic systems for the past 20 years. In addition to Larson, Professors John Wolff (Co-PI) and Larry Meinert at Washington State University, and Dr. Dennis Geist at the University of Idaho, together with their graduate students, will utilize the laser fluorination line in their respective research programs.The addition of a laser fluorination system at WSU will allow for the analyses of samples an order of magnitude smaller than can be currently analyzed with the lab's conventional fluorination system. Additionally, refractory minerals which have been traditionally difficult to measure with a conventional set-up can be analyzed easily with the new apparatus. The laser line will be constructed on-site and will deliver gas samples directly into an existing gas source mass spectrometer bellows. The new system will be used in an ongoing research project that is investigating the evolution of ocean island basalts on Tenerife, Canary Islands. Preliminary oxygen isotope data for phonolitic magmas from Tenerife suggest that assimilation of altered wall rocks is important in their evolution. However, this work is now limited by our inability to analyze small, individual phenocrysts from the nearly-aphyric basanites and phonolites. This facility will also be used in other ongoing research projects that focus on the sources and evolution of ore-forming hydrothermal fluids, magmatism and its relationship to tectonism and crustal evolution in continental environments, and paleoclimate studies of Tertiary paleosols in the Pacific Northwest. ***

9910129拉尔森这笔赠款为华盛顿州立大学的稳定同位素实验室购买激光束真空线的费用提供部分支持。 彼得·拉森（Peter Larson）在过去20年里一直在研究高温地质系统，并利用硅酸盐矿物和岩石的稳定同位素分析。 除了拉森，华盛顿州立大学的约翰·沃尔夫教授（联合PI）和拉里·迈纳特教授，以及爱达荷州大学的丹尼斯·盖斯特博士，以及他们的研究生，将在各自的研究项目中使用激光扫描线。在WSU增加一个激光扫描系统将允许对样品进行分析，其数量级小于目前实验室的分析。传统的电子邮件系统。 此外，传统上难以用传统装置测量的难熔矿物可以用新设备轻松分析。 激光线将在现场建造，并将气体样品直接输送到现有的气源质谱仪波纹管中。 新系统将用于一个正在进行的研究项目，该项目正在调查加那利群岛特内里费岛海洋岛屿玄武岩的演变。 初步的氧同位素数据从特内里费岛的响岩岩浆蚀变围岩的同化是重要的，在他们的演化。 然而，这项工作现在受到限制，我们无法分析小，个人斑晶从近隐晶质玄武岩和声子。 该设施还将用于其他正在进行的研究项目，这些项目的重点是成矿热液的来源和演变、岩浆作用及其与大陆环境中的构造作用和地壳演变的关系，以及太平洋西北部第三纪古土壤的古气候研究。***