An Accomplishment-Based Renewal: Mantle Plume/Ridge Interaction, Dispersal and Sources

基于成就的更新：地幔柱/山脊相互作用、扩散和来源

• 批准号: 9528801
• 负责人: Jean - guy Schilling
• 金额: $ 25.19万
• 依托单位: University of Rhode Island
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1996
• 资助国家: 美国
• 起止时间: 1996-11-01 至 2000-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9528801&HistoricalAwards=false
• 关键词: Accomplishment; Based; Renewal; Mantle; Plume

This Accomplishment-Based Renewal will support continued study of mantle heterogeneities and the interaction of mantle plumes with mid-ocean ridges and continental lithosphere. A newly-purchased Inductively Coupled Plasma Mass Spectrometer will be used to provide complete trace-element characterization, including Pb, Nd and Sr isotope series, on a large suite of existing samples. Six key questions will be addressed on: the nature of the Mid-ocean ridge basalt source depleted in incompatible elements, the cause of young isochrons in plume-influenced Mid-ocean ridge basalt, cause of geochemical anomalies in the South Atlantic, and the source of the Iceland plume.

这一基于成就的更新将支持继续研究地幔不均匀性以及地幔柱与洋中脊和大陆岩石圈的相互作用。 新购买的电感耦合等离子体质谱仪将用于对大量现有样品提供完整的痕量元素特征，包括Pb、Nd和Sr同位素系列。 将讨论六个关键问题：大洋中脊玄武岩源耗尽不相容元素的性质，年轻的等时线在洋中脊玄武岩的影响，在南大西洋的地球化学异常的原因，和冰岛羽的来源。