Paleomagnetism of the Avalonian Margin of Iapetus

阿巴拉契亚山脉北部包含一些奇异的地体，这些地体是在伊阿普图斯海洋关闭期间积累起来的，涉及北美和劳伦蒂亚以及冈瓦那的元素。然而，时间、几何形状和地体位置仍不完全清楚。该项目将重点放在缅因州较重要的地体之一阿瓦隆的西缘和加拿大东部的沿海省份，并将涉及古地磁、地质年代学和构造调查。这些结果将有助于检验为阿巴拉契亚加里东带提出的大量不同的构造情景，特别是伊阿普图斯南部主要弧/弧后系统的构造背景和位置。

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.