Preparation and AMS 14C Dating of Terrestrial Materials for ESH Program Research

用于 ESH 计划研究的陆地材料的制备和 AMS 14C 测年

• 批准号: 9809285
• 负责人: Scott Lehman
• 金额: $ 68.62万
• 依托单位: University of Colorado at Boulder
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1998
• 资助国家: 美国
• 起止时间: 1998-08-15 至 2001-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9809285&HistoricalAwards=false
• 关键词: Preparation; AMS; 14C; Dating; Terrestrial

Abstract ATM-9809285 Lehman, Scott University of Colorado Title: Preparation and AMS 14C Dating of Terrestrial Materials for the ESH Program ESH Program research relies upon the availability of accurate AMS 14C dates in order to obtain the chronologic control necessary for studies of natural climate variability on timescales of millennia or less. There is a compelling need for well-dated time series of terrestrial paleo-environmental change, and such efforts are likely to increase. This research often involves specialized pre- treatment of samples to separate contaminating from primary sources of carbon. The Laboratory for AMS 14C Preparation and Research at the University of Colorado (NSRL) and the National Ocean Sciences Accelerator Mass Spectrometry Facility (NOSAMS) at the Woods Hole Oceanographic Institution will offer pre-treatment, graphitization, and 14C measurement of terrestrial materials with an expected average sample-receipt to date-report turnaround time of 8 weeks or less. It is anticipated that this service and hence the reduced cost to the PI will help to motivate ESH-funded scientists to undertake more extensive, and potentially more accurate 14C dating of terrestrial paleo-climate and -environmental records.

摘要ATM-9809285 Lehman，Scott University of科罗拉多标题：ESH计划的准备和陆地材料的AMS 14 C测年 ESH计划的研究依赖于准确的AMS 14 C测年数据的可用性，以便获得千年或更短时间尺度上的自然气候变化研究所需的年代控制。 这项研究通常涉及专门的样品预处理，以分离污染的主要来源的碳。 科罗拉多大学（NSRL）的AMS 14 C制备和研究实验室和伍兹霍尔海洋研究所的国家海洋科学加速器质谱设施（NOSAMS）将提供预处理，石墨化，及14 C的测量结果，并预期到目前为止所收到的平均样本-报告周转时间为8周或更短。预计这项服务以及PI的成本降低将有助于激励ESH资助的科学家进行更广泛的，并且可能更准确的陆地古气候和环境记录的14 C测年。