MRI: Acquisition of a Noble Gas Multi-Collector Mass Spectrometer for Geochronology and Geochemistry Research

MRI：购买用于地质年代学和地球化学研究的惰性气体多接收器质谱仪

• 批准号: 1826921
• 负责人: George Gehrels
• 金额: $ 88.07万
• 依托单位: University of Arizona
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2018
• 资助国家: 美国
• 起止时间: 2018-10-01 至 2022-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1826921&HistoricalAwards=false
• 关键词: MRI; Acquisition; Noble; Gas; Multi

This project will establish a laboratory with state-of-the-art instruments for measuring noble gases in rock, mineral, and water samples, for geochronologic and geochemical studies in Earth, planetary, and environmental science. The facility will enable a wide variety of scientific studies by researchers and students at the University of Arizona and collaborating institutions. Some of the primary goals of these studies will be: 1) to investigate the timing and rates of geologic events and processes using radioisotopic dating, including faulting, magmatism, and erosion, 2) to characterize the behavior of noble gases in minerals to understand the material properties of natural crystals, and 3) to trace the movement and evolution of groundwater and other fluids in the Earth's subsurface. This project will also enable hands-on research training for students who will use the instruments and laboratory, helping them develop the quantitative and technical skills and experience for Earth, planetary, and environmental science.The centerpiece of the laboratory will be a new multi-collector gas-source sector mass spectrometer and sample introduction equipment including devices for extracting gases using resistance (furnace) and laser heating, crushing of fluid-inclusions, and exsolution from fluids. State of the art high-resolution, high-sensitivity, and multi-collection capabilities of the mass spectrometer will enable simultaneous measurement of all isotopes of argon and neon, and helium will be measured by peak-hopping. Important research foci for the instrument will include 1) geo- and thermochronology using the 40Ar/39Ar system for applications in tectonic, detrital, volcanic, and fault-systems; 2) low-temperature 4He/3He thermochronology and understanding helium mobility in minerals; 3) cosmogenic and nucleogenic 21Ne dating for geomorphic applications and for dating secondary minerals like iron oxides; and 4) isotopic compositions and concentrations of noble gases for tracing the fluxes and evolution of subsurface fluid-rock systems. In addition to serving researchers and students at the University of Arizona, Utah State University, and University of Texas El Paso, the facility will also provide analytical services and research experience opportunities for collaborators at a variety of institutions, including universities and liberal arts colleges, through analyses and workshops for diverse cohorts of students.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

该项目将建立一个具有最先进的工具的实验室，用于测量岩石，矿物质和水样中的贵重气体，用于地球，行星和环境科学的地球学和地球化学研究。该设施将使亚利桑那大学和合作机构的研究人员和学生能够多种科学研究。这些研究的一些主要目标将是：1）使用放射性分析约会的地质事件和过程的时间和速率，包括断层，磁岩和侵蚀，2）表征矿物质中贵重气体的行为以了解自然晶体的物质特性，以及3）在地下和其他地球上的运动和进化。 This project will also enable hands-on research training for students who will use the instruments and laboratory, helping them develop the quantitative and technical skills and experience for Earth, planetary, and environmental science.The centerpiece of the laboratory will be a new multi-collector gas-source sector mass spectrometer and sample introduction equipment including devices for extracting gases using resistance (furnace) and laser heating, crushing of fluid-inclusions, and exsolution from流体。质谱仪的最先进的高分辨率，高敏性和多收获能力将同时测量氩和霓虹灯的所有同位素，氦气将通过峰值跳高来测量。该仪器的重要研究重点将包括1）使用40AR/39AR系统用于构造，碎屑，火山和断层系统的应用； 2）低温4HE/3HE热量学学并了解矿物质的氦气流动性； 3）用于地貌应用的宇宙原性和核基因21ne，以及诸如铁氧化铁等二级矿物的日期；和4）用于追踪地下流体岩石系统的通量和演变的高贵气体的同位素组成和浓度。除了为亚利桑那大学，犹他州立大学和德克萨斯大学埃尔帕索大学的研究人员和学生提供服务外，该设施还将为各种机构的合作者提供分析服务和研究经验的机会，包括各种各样的大学授予的智能奖，并通过分析和讲习班来提供分析和讲习班。优点和更广泛的影响审查标准。