MRI: Acquisition of a Next Generation Noble Gas Multi-collector Mass Spectrometer System to Support Fundamental and Applied Geochronology Research and Education

MRI：采购下一代惰性气体多接收器质谱仪系统以支持基础和应用地质年代学研究和教育

• 批准号: 2019235
• 负责人: Sean Regan
• 金额: $ 56.19万
• 依托单位: University of Alaska Fairbanks Campus
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2020
• 资助国家: 美国
• 起止时间: 2020-08-15 至 2023-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2019235&HistoricalAwards=false
• 关键词: MRI; Acquisition; Next; Generation; Noble

This award will fund the acquisition of a next generation instrument to measure noble gases in rock material for geochronology constraints. Geochronology can be applied to the breadth of anthropology pursuits, planetary sciences and earth process systems from the surface to the deep earth. This University of Alaska Fairbanks laboratory will be a multi-user facility to facilitate the research goals of students, researchers, Alaska’s first people corporations, government agencies, and private economic geology entities. We will pursue many avenues of study including making detrital 40Ar/39Ar geochronology more readily available to the scientific community, investigating some of the problems with dating young (younger than 10,000 years old) volcanic rock products, and increasing the precision of dating the timing of mineralization to assist economic geology interests. The overall project will increase student access to geochronology data sets and train students in advanced geochronology laboratory methods and instrument operations. Student will also be prepared for careers in the earth sciences. This project will involve the installation, calibration, and operation of a next generation 40Ar/39Ar noble gas multi-collector sector mass spectrometer system. The system includes a custom extraction line, a CO2 laser, and a resistance furnace for degassing rock samples and cleaning up the extracted gases before measurement on the mass spectrometer. The noble gas mass spectrometer will be able to measure the five main argon isotopes concurrently leading to a 10X increase in precision over peak-hoping measurements on a single detector. The high-sensitivity and high resolution capabilities of the new instrumentation will allow measurements to be made on smaller samples sizes with a preference for single-grain applications. The instrument system will be used to further pursue the presence and causes of excess 36Ar in young volcanic rock products. The capabilities of the instrument system will also allow increased single-grain dating throughput allowing for more precise and more time efficient 40Ar/39Ar dating of detrital samples. The modern instrumentation will not only allow more access to geochronology data for students, but will provide a facility designed to enable training of future generations of geochronologists. This project is jointly funded by the EAR Instrumentation & Facilities Program, the Established Program to Stimulate Competitive Research (EPSCoR), and the Major Research Instrumentation Program.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.

该奖项将资助获得下一代工具，以测量岩石材料中的贵重气体，以实现地年代学约束。地年代学可以应用于人类学追求，行星科学和地球过程系统的广度，从表面到深层。该阿拉斯加大学Fairbanks大学实验室将是一家多用户设施，旨在促进学生，研究人员，阿拉斯加的第一批人公司，政府机构和私人经济地质实体的研究目标。我们将追求许多研究途径，包括使碎屑40AR/39AR的年代学更容易为科学界提供，并调查了一些与年轻时（年轻的年轻人）火山岩产品约会的问题，并提高了矿物质时代的精确度，以帮助经济地球地球地球地球地球地球地球地球地球地理利益。整个项目将增加学生对地年代学数据集的访问权限，并培训学生采用高级地球体学实验室方法和仪器操作的培训。学生还将为地球科学的职业做好准备。该项目将涉及下一代40AR/39AR Noble Gas Multi-Collector部门质谱仪系统的安装，校准和操作。该系统包括自定义提取线，二氧化碳激光器和用于脱气岩石样品的电阻炉，并在测量质谱仪之前清理提取的气体。高贵的气体质谱仪将能够同时测量五个主要的氩同位素，从而使单个检测器上的峰值测量值的精度提高10倍。新仪器的高敏度和高分辨率功能将允许对较小的样品尺寸进行测量，并偏爱单粒应用。该仪器系统将用于进一步推动年轻火山岩产品中过量36AR的存在和原因。仪器系统的功能还将允许增加单颗粒约会的吞吐量，从而使碎屑样品的更精确，更有效的40AR/39AR年代。现代仪器不仅将为学生提供更多访问地质学数据的访问，而且还将提供一个旨在培训子孙后代的工厂。该项目由耳朵仪器和设施计划，既定的竞争研究计划（EPSCOR）共同资助。该奖项反映了NSF的法定任务，并通过使用基金会的知识分子优点和更广泛的影响标准来评估NSF的法定任务。