Variations in Arc Volcanism during Early Stages of Arc/ Continent Collision in the Eastern Mediterranean: Application of Microprobe Technology

东地中海弧/大陆碰撞早期弧火山活动的变化：微探针技术的应用

• 批准号: 9632683
• 负责人: Peter Clift
• 金额: $ 4.84万
• 依托单位: Woods Hole Oceanographic Institution
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1996
• 资助国家: 美国
• 起止时间: 1996-12-01 至 1998-11-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9632683&HistoricalAwards=false
• 关键词: Variations; Arc; Volcanism; during; Early

Subduction zones and island arcs are regions of material flux to and from the mantle. Knowledge of the magnitude of these fluxes has a major bearing on understanding the evolution of the Earth. In the Mediterranean, the approach of Africa towards Europe appears to have resulted in the subduction of large amounts of sediment in the last few million years. Subducted sediment should affect the amount and chemistry of volcanism in the arc behind the subduction zone and the PI wishes to examine this model by analyzing ashes that were collected in cores in the Mediterranean that date back 5 million years.

俯冲带和岛弧是物质流入和流出地幔的区域。 了解这些通量的大小对理解地球的演化有着重要的意义。 在地中海，非洲向欧洲的靠近似乎导致了过去几百万年来大量沉积物的俯冲。 俯冲沉积物应该会影响俯冲带后面的弧中火山活动的数量和化学性质，PI希望通过分析在地中海岩芯中收集的可追溯到500万年前的灰烬来检查这个模型。