The Bend in the Louisville Hotspot Chain: Comparison with the Hawaiian-Emperor Elbow

路易斯维尔热点链的弯曲：与夏威夷皇帝肘部的比较

• 批准号: 0351512
• 负责人: Peter Lonsdale
• 金额: --
• 依托单位: University of California-San Diego Scripps Inst of Oceanography
• 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: 2004-09-01 至 2008-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0351512&HistoricalAwards=false
• 关键词: Bend; Louisville; Hotspot; Chain; Comparison

The Louisville seamount chain is one of the best places to test hypotheses related to the eruptive history of a major hotspot chain and motion of a hotspot plume. The project will acquire geophysical data and geologic samples from the Louisville chain to answer fundamental questions about the relative motion of the Pacific plate and Louisville hotspot plume over the past 80 M.y. The acquired data will also serve to define drilling targets for a possible IODP program in the future. The researchers plan to dredge seafloor rocks, conduct extensive total-field and three-component magnetic surveys, use multibeam and Chirp techniques to map the seafloor, and apply high-resolution seismic methods to image the subseafloor during an oceanographic cruise along 2900 km of the Louisville chain, and, along with collaborators, they will conduct chemical and geochronologic analyses on rocks from 25 sites. They will also compare their results with data from the better-studied Hawaiian chain.

路易斯维尔海山链是检验与主要热点链的喷发历史和热点羽流运动有关的假设的最佳地点之一。该项目将从路易斯维尔链获取地球物理数据和地质样本，以回答有关过去80万年太平洋板块和路易斯维尔热点羽流相对运动的基本问题。所获得的数据还将用于确定未来可能的IODP计划的钻探目标。研究人员计划挖掘海底岩石，进行广泛的全场和三分量磁调查，使用多波束和Chirp技术绘制海底地图，并在沿着路易斯维尔链2900公里的海洋巡航期间应用高分辨率地震方法对海底进行成像，并且与合作者一起，他们将对25个地点的岩石进行化学和地质年表分析。他们还将把他们的结果与研究得更好的夏威夷连锁店的数据进行比较。