Geomagnetic excursions in the Brunhes and late Matuyama Chrons and correlation to paleointensity data

Brunhes 和晚松山年代的地磁偏移以及与古强度数据的相关性

• 批准号: 0350830
• 负责人: James Channell
• 金额: --
• 依托单位: University of Florida
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2004
• 资助国家: 美国
• 起止时间: 2004-05-15 至 2009-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0350830&HistoricalAwards=false
• 关键词: Geomagnetic; excursions; Brunhes; late; Matuyama

Funds are provided for a magnetic paleointensity study of sediments from one ODP site in the Atlantic Ocean (and compared to a second site for which a detailed oxygen isotope stratigraphy has been established). For the off Bermuda core this oxygen isotope stratigraphy is mainly be based on benthic foraminifera, whereas for the site from the northern most North Atlantic (to be studied in detail here) stratigraphy will come from planktonic foraminiferal oxygen-isotope data. Within the framework of these stratigraphies the PI will carry out a high-resolution study to identify geomagnetic excursions and paleointensity patterns. The study could advance this magnetic paleointensity technique substantially, and could add a new tool to the tool-kit for high resolution stratigraphy.

已提供资金，对大西洋一个臭氧消耗潜能点的沉积物进行磁性古强度研究（并与已建立详细氧同位素地层学的第二个地点进行比较）。对于百慕大以外的岩心，氧同位素地层学主要基于底栖有孔虫，而对于北大西洋最北部北方的地点（将在此详细研究），地层学将来自浮游有孔虫氧同位素数据。在这些地层学的框架内，PI将进行高分辨率研究，以确定地磁漂移和古强度模式。该研究将大大推进磁古强度技术的发展，为高分辨率地层学的研究增添新的工具。