Petrological, Geochemical, & Geochronological Investigation of the Easter Island Seamount Volcanic Chain, Southeast Pacific

岩石学、地球化学、

• 批准号: 9531887
• 负责人: Rodey Batiza
• 金额: $ 3.71万
• 依托单位: University of Hawaii
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1995
• 资助国家: 美国
• 起止时间: 1995-11-15 至 1997-10-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9531887&HistoricalAwards=false
• 关键词: Petrological; Geochemical; & Geochronological; Investigation

9531887 Batiza This is a multiprong analyical investigation of the origin of the Easter-Sala y Gomez seamount and island chain in the southeast Pacific Ocean. At present there are four models for the origin of the chain: simple hotspot chain, leaky fracture zone, hot line delineating the limbs of two ascending convection cells, and plume-ridge interaction. The principal investigators have collected rocks containing fresh glass during two cruises to the chain. In this project they will obtain radiometric dates on the samples and determine the chemical and isotopic composition of the samples ***

这是一项对东南太平洋的复活节-萨拉-戈麦斯海山和岛链起源的多方面分析研究。目前关于该链的起源有四种模式：简单热点链模式、泄漏断裂带模式、划分两个上升对流单元分支的热线模式和羽脊相互作用模式。在两次前往链条的航行中，主要研究人员收集了含有新鲜玻璃的岩石。在这个项目中，他们将获得样品的辐射测定日期，并确定样品的化学和同位素组成