COLLABORATIVE RESEARCH: Petrologic, Isotopic, and Structural Evolution of Low Pressure Metamorphism in an Accretionary Complex, Eastern Chugach Mountains, Alaska

合作研究：阿拉斯加东楚加奇山脉增生杂岩中低压变质作用的岩石学、同位素和结构演化

• 批准号: 9018717
• 负责人: Terry Pavlis
• 金额: $ 7.92万
• 依托单位: University of New Orleans
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1991
• 资助国家: 美国
• 起止时间: 1991-03-01 至 1993-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9018717&HistoricalAwards=false
• 关键词: COLLABORATIVE; RESEARCH; Petrologic; Isotopic; Structural

The metamorphic and structural consequences of ridge subduction along a convergent margin are not well known, but is significant because virtually all convergent margins will ultimately consume a spreading center. This collaborative project between EAR90-18717 and EAR90-20391 will examine the Chugach metamorphic complex which possesses several unusual features that can be attributed to ridge subduction in the Tertiary. Work will focus on the anomalous low P, high T metamorphic and the structural and kinematic setting which accompanied the formation of this metamorphic assemblage. Results will lead to a general model for ridge subduction-related tectonics.

海岭的变质和构造后果 沿着会聚边缘俯冲作用并不为人所知，但 重要的是，几乎所有收敛的利润率都将 最终消耗一个扩散中心。 这个合作项目 在EAR 90 -18717和EAR 90 -20391之间将检查Chugach 变质杂岩具有几个不寻常的特征， 可以归因于第三纪的山脊俯冲。 工作将 重点研究异常低P、高T变质及构造 和运动学背景， 变质组合 结果将导致一个通用模型， 海岭俯冲相关构造