Acquisition of a Laser Ablation System in Support of (U-Th)/He and U/Pb Multidating of Accessory Minerals

获取激光烧蚀系统以支持副矿物 (U-Th)/He 和 U/Pb 多重测年

• 批准号: 1321361
• 负责人: Kip Hodges
• 金额: $ 21.6万
• 依托单位: Arizona State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2013
• 资助国家: 美国
• 起止时间: 2013-09-01 至 2015-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1321361&HistoricalAwards=false
• 关键词: Acquisition; Laser; Ablation; System; Support

In recent years, geoscientists have increasingly applied the methods of geochronology - the determination of mineral crystallization ages - and thermochronology - the determination of cooling ages - to minerals in sedimentary rocks with the aim of fingerprinting the bedrock sources of these minerals and the cooling histories of those sources. There is great scientific advantage in performing both geochronologic and thermochronologic studies on the same mineral grains, but conventional analytical techniques seldom enable such 'multidating' studies. This grant permits the acquisition of a new ultraviolet laser ablation instrument that, when integrated with existing instruments in the Noble Gas Geochronology and Geochemistry Laboratories at Arizona State University, will establish the first fully automated analytical system for zircon (U-Th)/He thermochronology and U/Pb geochronology.Broader impacts from this project include opportunities for geology graduate and undergraduate students from outside the ASU community to perform analyses on the system as guest researchers. In addition, the integration of components to build the system will serve as a case study for an on-line 'analytical systems engineering' subject in ASU's B.S. degree program in Exploration Systems Design.

近年来，地球科学家越来越多地将地质学的方法（矿物结晶年龄的确定 - 和热量学 - 对冷却年龄的测定）应用于沉积岩中的矿物质，目的是指纹指纹这些矿物质的底岩来源和这些来源的冷却历史。在同一矿物晶粒上同时进行测量学和热量计划研究具有很大的科学优势，但是常规的分析技术很少能够实现此类“多阶段”研究。该赠款允许获得一种新的紫外线激光消融仪器，该工具与亚利桑那州立大学的贵族气体天地学和地球化学实验室中的现有工具集成在一起时，将建立第一个全自动自动化的氧化锆（U-th）/He He Themochology和PB Geochronology的分析系统，包括该项目。作为客座研究人员对系统进行分析。此外，构建该系统的组件的集成将作为ASU B.S.中在线“分析系统工程”主题的案例研究。勘探系统设计中的学位课程。