Collaborative Research: The Tectonothermal Evolution of a Convergent Orogen

合作研究：聚合造山带的构造热演化

• 批准号: 0207263
• 负责人: David West
• 金额: $ 4.65万
• 依托单位: Middlebury College
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2002
• 资助国家: 美国
• 起止时间: 2002-06-15 至 2007-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0207263&HistoricalAwards=false
• 关键词: Collaborative; Research; Tectonothermal; Evolution; Convergent

Understanding of orogenesis and its relations to mantle convection and plate tectonics relies on integrated studies of the interrelations among processes of deformation, metamorphism and magmatism. A well preserved portion of the northern Appalachian orogen is providing an outstanding laboratory for a truly integrative study of the evolution of mid-crustal processes that strongly influence orogenesis. This project is employing structural, microstructural, petrologic and thermobarometric analyses, and chemical and isotopic dating, to temporally and spatially link deformation, metamorphism and magmatism during the progressive growth of this orogenic belt. This information is being used to set constraints and boundary conditions on coupled, 3-D thermal/mechanical models that, in tandem with the geological observations, are being used used to gain insights into the orogen's evolution and associated plate dynamics.

对造山学及其与地幔对流和板块构造的关系的理解依赖于对变形，变质和岩浆作用过程之间相互关系的综合研究。 北阿巴拉契亚造山基因保存完好的一部分为对强烈影响造成造成的中期过程的进化提供了出色的实验室。 该项目正在采用结构，微观结构，岩石学和热生体测量学分析，以及化学和同位素约会，以在此造山带的逐步生长过程中在时间和空间上连接变形，变质和岩浆作用。 这些信息用于在耦合的3-D热/机械模型上设置约束和边界条件，这些模型与地质观察结果一致，用于获得对基质的进化和相关板动力学的见解。