Petrologic and Structural Study of Inverted Metamorphic Sequence

倒转变质层序的岩石学和构造研究

• 批准号: 9017846
• 负责人: Lincoln Hollister
• 金额: $ 4.8万
• 依托单位: Princeton University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1990
• 资助国家: 美国
• 起止时间: 1990-10-01 至 1992-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9017846&HistoricalAwards=false
• 关键词: Petrologic; Structural; Study; Inverted; Metamorphic

The Marclaren Glacier metamorphic belt represents a deep- seated megashear between Alaska and the Wrangellia superterrane. Prior work has shown that melt was intruded into the megashear while in a compressive regime. This renewal will incorporate cooling dates into a comprehensive cooling and exhumation model of the area, and refine metamorphic reactions. Results will provide insight into the factors which control strain in the lower crust during continental convergence and accretion.

马克拉伦冰川变质带是位于阿拉斯加和弗兰格里亚超地体之间的一个深埋巨型冰川带。先前的研究表明，熔体是在压缩状态下侵入到巨型岩石中的。这项更新将把冷却日期纳入该地区的综合冷却和挖掘模型，并改进变质反应。研究结果将有助于深入了解在大陆辐合和增生过程中控制下地壳应变的因素。