Petrological, Geochemical, & Geochronological Investigation of the Easter Island Seamount Volcanic Chain, Southeast Pacific: A Group Proposal

岩石学、地球化学、

• 批准号: 9531888
• 负责人: Robert Poreda
• 金额: $ 4.19万
• 依托单位: University of Rochester
• 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=9531888&HistoricalAwards=false
• 关键词: Petrological; Geochemical; & Geochronological; Investigation

9531888 Poreda 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 ***

9531888 Poreda 这是对东南太平洋复活节萨拉戈麦斯海山和岛链起源的多方面分析调查。 目前，链的起源有四种模型：简单热点链、泄漏断裂带、描绘两个上升对流单元四肢的热线以及羽-脊相互作用。 主要研究人员在两次前往该链的航行中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数据并确定样品的化学和同位素组成***