Paleomagnetism of the Avalonian Margin of Iapetus

阿巴拉契亚山脉北部有许多奇特的地形，这些地形是在Iapetus海洋关闭期间形成的，其中包括北美、劳伦西亚和冈瓦纳的元素。然而，时间、几何形状和地形位置仍然不完全清楚。该项目将集中在缅因州阿瓦隆（Avalon）的西部边缘，这是一个更重要的地块之一，以及加拿大东部的沿海省份，将涉及古地磁、地质年代学和构造调查。研究结果将有助于检验大量关于阿巴拉契亚加里多尼亚带的对比构造情景，特别是Iapetus南部主要弧/弧后体系的构造背景和位置。

The northern Appalachians contain a number of exotic terranes, accreted during the closure of the Iapetus ocean that involved elements of North America and Laurentia as well as Gondwana. However, the timing, geometry and terrane positions are still incompletely known. This project will focus on the western margin of Avalon, one of the more important terranes, in Maine, and the Maritime provinces of eastern Canada and will involve paleomagnetic, geochronologic and tectonic investigations. Results will be useful in testing the large number of contrasting tectonic scenarios that have been proposed for the Appalachian Caledonian belt, in particular the tectonic setting and locations of major arc/back arc systems in the southern portion of Iapetus.