Studies of Blueschist Materials From Mariana Forearc Mud Volcanoes

马里亚纳弧前泥火山蓝片岩材料的研究

• 批准号: 9811236
• 负责人: Patricia Fryer
• 金额: $ 8.78万
• 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: 1998
• 资助国家: 美国
• 起止时间: 1998-11-15 至 2003-10-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9811236&HistoricalAwards=false
• 关键词: Studies; Blueschist; Materials; Mariana; Forearc

Fryer. et. al.The PIs will investigate the blueschist samples collected during earlier cruises from the Mariana Forearc. The Mariana is the only area where direct samples are available from deep-seated material brought to the seafloor by mud volcanoes with deep faults acting as conduits for this deep forearc material. Isotopic studies of the pore fluids, enclosing solid material and fluid/gas inclusions will reflect the source regions and enroute water-rock interactions. The study will provide better constraints on temperature-pressure conditions of the deep forearc mantle wedge near the decollement and nature of the water-rock interactions in convergent margins.

弗莱尔。埃特。私家侦查员将调查在马里亚纳前弧早期航行中收集到的蓝片岩样本。马里亚纳海是唯一可以从深层物质中获得直接样品的地区，这些物质是由深断层的泥火山带到海底的，这些深断层充当了这种深弧前物质的管道。孔隙流体、包裹体和流体/气体包裹体的同位素研究将反映物源区和水-岩相互作用过程。这项研究将对滑脱附近弧前深部地幔楔体的温度-压力条件和收敛边缘水-岩相互作用的性质提供更好的约束。