Acquisition of a State-of-the-Art 40Ar/39Ar Geochronology System for the AGES Lab at Lamont-Doherty Earth Observatory

为拉蒙特-多尔蒂地球观测站 AGES 实验室采购最先进的 40Ar/39Ar 地质年代学系统

• 批准号: 1636685
• 负责人: Sidney Hemming
• 金额: $ 57.93万
• 依托单位: Columbia University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2016
• 资助国家: 美国
• 起止时间: 2016-08-01 至 2018-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1636685&HistoricalAwards=false
• 关键词: Acquisition; State; Art; 40Ar; 39Ar

Analytical facilities for dating geological materials are important for education, research and economic and petroleum geology exploration. The AGES (Argon Geochronology for Earth Sciences) laboratory at Lamont-Doherty Earth Observatory was established in 1997, and actively contributes to all of these goals working with both academic and industry colleagues. This award will provide funding to acquire a new-generation noble gas mass spectrometer and pumps for its extraction line to set up a state-of-the art instrument for high precision measurements of Argon isotopes that permit dating of geological materials. This improved capability provides extraordinary opportunities for improving our understanding of Earth's history of climate variability, biological evolution and mountain-building processes. The training of students in analytical procedures and geochronology methods will be greatly enhanced by access to state-of-the-art instrumentation. Over the past several years, the advent of a new generation of noble gas mass spectrometers for Ar-Ar dating is greatly improving the precision with which small samples can be analyzed. Such improvements are critical for the goal of sequencing Earth History with a seamlessly integrated Ar-Ar : U-Pb : astrochronology time-scale and for probing important events in Earth's history such as extinctions, dramatic climate changes and evolutionary pathways. This funding will allow the purchase of a state-of-the-art noble gas instrument as well as peripheral parts for building an extraction line for introducing samples to the instrument. The AGES lab at LDEO has been an active participant in EARTHTIME activities that are dedicated towards the goal of accurately sequencing Earth history. The upgrade that will come from the acquisition of this new generation of instrument will transform the ability to continue to be actively involved in EARTHTIME while also continuing to train students and post docs and serve a large collaborative user base.

地质物质测年分析设备在教育、科研、经济和石油地质勘探等方面具有重要意义。Lamont-Doherty地球观测站的地球科学氩地质年代学实验室成立于1997年，并与学术界和工业界的同事一起积极地为所有这些目标做出贡献。该合同将提供资金，用于购买新一代稀有气体质谱仪和用于提取线的泵，以建立最先进的仪器，用于高精度测量氩同位素，从而可以确定地质材料的年代。这种能力的提高为我们更好地了解地球历史上的气候变化、生物进化和造山过程提供了难得的机会。学生在分析程序和地质年代学方法方面的训练将因获得最先进的仪器而大大加强。在过去的几年里，用于Ar-Ar测年的新一代惰性气体质谱仪的出现大大提高了小样本分析的精度。这些改进对于利用无缝集成的Ar-Ar: U-Pb：天文年代学时间尺度对地球历史进行排序的目标，以及探索地球历史上的重要事件，如灭绝、剧烈的气候变化和进化途径，都是至关重要的。这笔资金将用于购买最先进的惰性气体仪器以及用于建立提取线的外围部件，以便将样品引入仪器。LDEO的AGES实验室一直积极参与致力于精确排序地球历史的EARTHTIME活动。购置新一代仪器所带来的升级将改变继续积极参与地球时间的能力，同时也将继续培训学生和博士后，并为大型协作用户群提供服务。