Dredging the Samoan Hotspot

疏浚萨摩亚热点地区

• 批准号: 9819038
• 负责人: Stanley Hart
• 金额: $ 23.58万
• 依托单位: Woods Hole Oceanographic Institution
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1999
• 资助国家: 美国
• 起止时间: 1999-03-15 至 2002-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9819038&HistoricalAwards=false
• 关键词: Dredging; Samoan; Hotspot

Four volcanic features near the Samoan hotspot will be dredged. Dating and geochemical analysis of the dredge rocks will help document the existence of an active hotspot, its probable location, and the possible contamination of the volcanism by subducted material from the Tonga Trench. The samples will also provide basalt glass quenched at great enough water depth to ensure retention of a full complement of rare gases and other volatiles.

萨摩亚热点附近的四个火山特征将被挖出。 对挖泥岩石的约会和地球化学分析将有助于记录活跃的热点的存在，可能的位置以及通过俯冲材料从汤加沟渠中俯冲的材料对火山的污染。 样品还将提供在足够大的水深下淬灭的玄武岩玻璃，以确保保留完整的稀有气体和其他挥发物。