Volcanic Growth Rates and Elemental Fluxes From Central America

中美洲的火山增长率和元素通量

• 批准号: 0505924
• 负责人: Michael Carr
• 金额: --
• 依托单位: Rutgers University New Brunswick
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2005
• 资助国家: 美国
• 起止时间: 2005-08-01 至 2009-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0505924&HistoricalAwards=false
• 关键词: Volcanic; Growth; Rates; Elemental; Fluxes

AbstractUnder this award the PIs will attempt to determine the flux of highly incompatible elements out of the volcanic front in Nicaragua and Costa Rica, in order to make realistic mass balance estimates for highly incompatible elements in the Subduction Factory. The idea is to determine volcanic production rates through strategic sampling of the older parts of the 20 Quaternary volcanic centers in the arc and to obtain reliable and meaningful age dates that will allow them to calculate growth rates for the predominantly mafic volcanic centers. This study should also allow the PIs to determine whether the volcanic production rate (and thereby the fluxes of incompatible elements) is constant or a series of pulses and gaps. Broader impacts include international collaboration and broad student involvement.

根据这项裁决，PI将尝试确定尼加拉瓜和哥斯达黎加火山前缘高度不相容元素的流动，以便对俯冲工厂中高度不相容元素进行现实的质量平衡估计。这个想法是通过对弧内20个第四纪火山中心的较老部分进行战略采样来确定火山生产率，并获得可靠和有意义的年龄数据，使他们能够计算以镁铁质为主的火山中心的增长率。这项研究还应使PI能够确定火山生产率(以及不相容元素的通量)是恒定的，还是一系列的脉冲和间隙。更广泛的影响包括国际合作和学生的广泛参与。