Collaborative Research: The Samoan Hotspot, Past and Present

合作研究：萨摩亚热点地区的过去和现在

• 批准号: 0351437
• 负责人: Stanley Hart
• 金额: $ 19.47万
• 依托单位: Woods Hole Oceanographic Institution
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2005
• 资助国家: 美国
• 起止时间: 2005-01-01 至 2006-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0351437&HistoricalAwards=false
• 关键词: Collaborative; Research; Samoan; Hotspot; Past

Based on recent detailed studies of the eastern Samoan province, and key reconnaissance in the western province, the PIs will undertake 20-day dredging cruise that will illuminate and test the generality of existing (Hawaiian) models for hotspot chains. The PIs will dredge 15 volcanic edifices spaced along 1040 km of the chain, to elucidate the age progression model, to expand and fill in the Pb-isotope correlation, to explore the limits of the globally extreme enriched Sr isotope signature found at many of the volcanoes, and will map and characterize the en echelon lineaments that knit Samoan volcanoes together. In addition, the PIs will, under this award, carry out a number of educational and outreach programs involving school children in Samoa and contribute to ideas of how the earth has differentiated over its long history.

根据最近对萨摩亚东部省的详细研究和对西部省的重点侦察，PI将进行为期20天的疏浚巡航，以阐明和测试现有（夏威夷）热点链模型的通用性。研究所将沿着沿着1 040公里的火山链挖掘15个火山建筑物，以阐明年龄发展模式，扩大和填补铅同位素相关性，探索在许多火山发现的全球极端富集锶同位素特征的局限性，并将绘制将萨摩亚火山连接在一起的雁行线性构造图并说明其特征。此外，在该奖项下，项目执行人将开展一系列涉及萨摩亚学童的教育和外联方案，并就地球在其漫长历史中如何分化的问题提出意见。