Paleothermometry of Sedimentary Carbonates in the Andean Plateau, and the Timing and Lateral Extent of Surface Uplift

安第斯高原沉积碳酸盐的古温度测量以及地表隆起的时间和横向范围

• 批准号: 0543952
• 负责人: John Eiler
• 金额: $ 4.69万
• 依托单位: California Institute of Technology
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2006
• 资助国家: 美国
• 起止时间: 2006-08-15 至 2007-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0543952&HistoricalAwards=false
• 关键词: Paleothermometry; Sedimentary; Carbonates; Andean; Plateau

EAR-0543952EILERThe goals of this work are to create a data set that demonstrates the capabilities and limitations of clumped isotope thermometry for reconstructing soil temperature records, and that guides sampling and analytical protocols required to generate reliable records. Based on our previous work on Miocene and recent Bolivian Altiplano soils, we believe there is a reasonable chance of succesfully completing this task within 1 year, and that this work will require ca. 50 'clumped isotope' analyses, supported by SEM, optical microscopy and electron microprobe characterizations of analyzed samples.Specifically, we will conduct a 1-year study of the stable isotope systematics, including 'clumped isotope thermometry' measurements of several suites of modern and recent soil carbonates, for which average growth temperatures can be independently estimated based on meteorological records and/or independent paleoclimatic reconstructions. The suites we will examine include recent soil carbonates sampled from the north-central Altiplano plateau and the western United States (principally central Wyoming and the Colorado plateau).

EAR-0543952EILER 这项工作的目标是创建一个数据集，展示丛同位素测温法重建土壤温度记录的能力和局限性，并指导生成可靠记录所需的采样和分析协议。 根据我们之前对中新世和最近的玻利维亚高原土壤的研究，我们相信有合理的机会在一年内成功完成这项任务，并且这项工作将需要大约 10 年的时间。 50 次“丛集同位素”分析，由 SEM、光学显微镜和电子显微镜对分析样品的表征进行支持。具体来说，我们将对稳定同位素系统学进行为期 1 年的研究，包括对几套现代和最近的土壤碳酸盐，可以根据气象记录和/或独立的古气候重建来独立估计其平均生长温度。我们将检查的套件包括从阿尔蒂普拉诺高原中北部和美国西部（主要是怀俄明州中部和科罗拉多高原）采样的最新土壤碳酸盐。