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 Larsonthisthis Grant为华盛顿州立大学的稳定同位素实验室获得激光氟化真空线的成本提供了部分支持。 PI，Peter Larson在过去20年中对高温地质系统的研究中利用了硅酸盐矿物质和岩石的稳定同位素分析。 除拉尔森（Larson）外，华盛顿州立大学的约翰·沃尔夫（Co-Pi）教授和拉里·梅纳特（Larry Meinert）以及爱达荷大学的丹尼斯·盖斯特（Dennis Geist）以及他们的研究生将在各自的研究计划中利用激光氟化线。 系统。 此外，可以通过新的设备轻松分析传统上难以测量的难治性矿物质。 激光线将在现场构建，并将直接将气体样品传递到现有的气源质谱仪波纹管中。 新系统将用于正在进行的研究项目中，该项目正在研究Tenerife，Canary Islands上海洋岛玄武岩的演变。 特内里费岛语音岩浆的初步氧同位素数据表明，改变壁岩的同化在其进化中很重要。 但是，这项工作现在受到我们无法分析近乎陈词性巴利群落和语音岩的小型，单独的表晶的限制。 该设施还将用于其他正在进行的研究项目中，该项目重点介绍了矿石形成的水热液的来源和演变，岩浆质及其与大陆环境中构造和地壳进化的关系，以及对西北太平洋西北太平洋古代醇的古气候研究。 ***