Development and Application of AMS Carbon-14 Chronologies from Organic Carbon in Antarctic Marine Sediments

南极海洋沉积物有机碳 AMS Carbon-14 年表的开发与应用

• 批准号: 9813941
• 负责人: Philip Froelich
• 金额: $ 12.97万
• 依托单位: Georgia Tech Research Corporation
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1998
• 资助国家: 美国
• 起止时间: 1998-10-01 至 2002-10-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9813941&HistoricalAwards=false
• 关键词: Development; Application; AMS; Carbon; 14

9813941 Froelich This ESH project will attempt to obtain precise and accurate radiocarbon dates from Antarctic diatomaceous sediments. Preliminary work suggests that modern radiocarbon is adsorbed onto the material during preparation, resulting in artificially young ages. A variety of directions will be explored, including replacement of ambient CO2 in the gas vacuum line by other gases, and separation of the organic matrix from the enclosing silica. Successful application will permit the dating of known records of climate change hitherto undateable.

小行星9813941 该ESH项目将试图从南极白垩纪沉积物中获得精确和准确的放射性碳年代。 初步工作表明，现代放射性碳在制备过程中被吸附到材料上，导致人为的年轻年龄。 将探索各种方向，包括用其他气体替代气体真空管线中的环境CO2，以及将有机基质与封闭的二氧化硅分离。 成功的应用将允许迄今无法确定的已知气候变化记录的日期。