Isotopic Record of the Miocene Phosphorite Sediment on the Carolina Continental Margin: A History of Glacio-Eustatic Sea-Level Cyclicity

卡罗莱纳大陆边缘中新世磷矿沉积物的同位素记录：冰川期海平面循环的历史

• 批准号: 8709429
• 负责人: Stanley Riggs
• 金额: $ 5万
• 依托单位: East Carolina University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1987
• 资助国家: 美国
• 起止时间: 1987-10-15 至 1990-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8709429&HistoricalAwards=false
• 关键词: Isotopic; Record; Miocene; Phosphorite; Sediment

This is a multi-institutional proposal by Showers(N.C. State University) and Riggs(E. Carolina University) which was submitted with identical texts and was reviewed as one proposal. The PIs propose to extend the work of Riggs on depositional models for highly cyclic, Miocene phosphorite sediments on the North Carolina continental margin to include stable isotopic evidence of diagenetic changes within the phosphorites. Once samples with diagenetic overprints have been identified, the remaining samples will be used to interpret a high-resolution paleoceanographic record of isotopic changes during the Miocene. This record will be combined with the rock-record of sealevel changes in order to examine the role of paleoclimate and sealevel on continental margin sedimentation.

这是Showers(北卡罗来纳州立大学)和Riggs(E.Carolina大学)提交的一项多机构提案，提交的文本相同，并作为一个提案进行了审查。PIS建议扩展Riggs在北卡罗来纳州大陆边缘高度旋回的中新世磷岩沉积物沉积模型方面的工作，以包括磷岩内成岩变化的稳定同位素证据。一旦确定了具有成岩叠加的样品，剩余的样品将用于解释中新世期间高分辨率的同位素变化的古海洋学记录。这一记录将与海平面变化的岩石记录相结合，以考察古气候和海平面对大陆边缘沉积的作用。