Oxygen Isotopes of Phosphate in Authigenic Carbonate-fluorapatite a Potential Recorder of Deep-water Oxygen Isotope Ratios and Temperatures A Proof of Concept Study

自生碳酸盐-氟磷灰石中磷酸盐的氧同位素是深水氧同位素比率和温度的潜在记录器概念研究的证明

• 批准号: 0749908
• 负责人: Adina Paytan
• 金额: $ 2万
• 依托单位: University of California-Santa Cruz
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2007
• 资助国家: 美国
• 起止时间: 2007-09-15 至 2008-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0749908&HistoricalAwards=false
• 关键词: Oxygen; Isotopes; Phosphate; Authigenic; Carbonate

This project explore the feasibility of using 18-O isotopes preserved in phosphate-bound oxygen in fluorapatite from oceanic environments where calcium carbonate is not preserved to asses bottom water temperatures. To do so the PI proposes to collect and analyze the ä18O of deep seawater, pore waters and authigenic carbonate-fluorapatite from several push cores in the California Margin. The PI will participate in an already scheduled cruise in the region. Additionally, the PI will analyze the ä18O of authigenic carbonate-fluorapatite extracted from a few samples representing different locations and ages for which a robust carbonate based benthic ä18O record exist and compare the data sets.

本项目探讨了使用保存在海洋环境中的氟磷灰石中磷酸盐结合氧中的18-O同位素的可行性，在海洋环境中，碳酸钙不被保存，以评估底层水温。 为此，PI建议从加州边缘的几个推岩岩心中收集和分析深海海水、孔隙沃茨和自生碳酸盐-氟磷灰石的Δ 18 O。 PI将参加该地区已经安排好的巡航。 此外，PI将分析从代表不同地点和年龄的几个样本中提取的自生碳酸盐-氟磷灰石的<$18 O，并比较数据集，这些样本存在可靠的碳酸盐基底栖<$18 O记录。