Structural, Petrological and Geochronological Studies of the Granulite to Eclogite Transformation in the Deep Continental Crust, Bergen Arcs, Norway

挪威卑尔根岛深部大陆地壳中麻粒岩到榴辉岩转变的结构、岩石学和年代学研究

• 批准号: 9205649
• 负责人: Eric Essene
• 金额: $ 7.25万
• 依托单位: Regents of the University of Michigan - Ann Arbor
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1992
• 资助国家: 美国
• 起止时间: 1992-06-01 至 1994-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9205649&HistoricalAwards=false
• 关键词: Structural; Petrological; Geochronological; Studies; Granulite

Exhumation processes of deep crustal rocks are still poorly understood. Exceptionally deep exposures of Caledonian continental crust within the Bergen Arcs of western Norway regionally expose granulite to eclogite transition rocks, thus offering a window into the roots of a continent-continent collisional orogenic system that subsequently was unroofed. This project will derive P-T-t paths from metamorphic relationships, thermobarometry and geochronology. Systematic observations of the structural relationships combined with the petrologic and geochronologic results should provide significant insights into both the tectonic evolution of this deep crustal portion of the Caledonides and the understanding of orogenic processes in continent-continent collisional belts.

深部地壳岩石的折返过程仍然很差 明白 加里东大陆异常深部出露 挪威西部的卑尔根弧内的地壳区域性地暴露 麻粒岩到榴辉岩的过渡岩石，从而提供了一个窗口， 陆-陆碰撞造山系统的根源， 后来被拆除。 本项目将推导出P-T-t路径 从变质关系、温压测定法和地质年代学。 对结构关系的系统观察 岩石学和地质年代学的结果应该提供 对这个深海的构造演化 加里东的地壳部分和理解 陆-陆碰撞带造山作用