Evolution of the Grenville Terrane in Ontario

阿巴拉契亚山脉北部的格伦维尔地体现在暴露出深埋的地壳部分，这些地壳在9亿到12亿年前参与了造山运动。先前的研究表明，在安大略省暴露的部分格伦维尔地体在上角闪岩或麻粒岩相变质期间被埋深40至45公里。这项研究将扩大旨在利用机会研究沿韧性断层运动过程以及此类深层岩石的隆起和冷却模式的调查。一些同位素、岩石学和构造技术将被用来确定格伦维尔地体的变质和地质年代史。研究结果将有助于约束碰撞造山带深部地壳环境中的构造和地球化学过程，包括流体流动。

The Grenville terrane in the northern Appalachians now exposes the deeply buried parts of the crust that was involved in orogeny from 0.9 to 1.2 billion years ago. Previous work suggests that parts of the Grenville Terrane exposed in Ontario were buried as deeply as 40 to 45 km during metamorphism to upper amphibolite or granulite facies. This research will extend investigations aimed at taking advantage of the opportunity to study processes of movements along ductile faults and uplift and cooling patterns of such deep-seated rocks. A number of isotopic, petrologic and structural techniques will be used to define the metamorphic and geochronological history of the Grenville terrane. Results will help constrain tectonic and geochemical processes, including fluid flow, in deep crustal environments of collisional orogenic zones.