Paleomagnetism of Ordovician and Silurian Units in the Northern Appalachians

先前对阿巴拉契亚北部奥陶系火山岩的古地磁研究表明，火山地体向劳伦西亚边缘的沉积是在志留纪晚期至泥盆纪早期完成的。这些地形被认为是拉皮特斯海洋的遗迹。它们的增生伴随着相当大的走滑运动。这项研究将对纽芬兰、新不伦瑞克、魁北克和缅因州劳伦森边缘地区的奥陶系和志留系岩石进行古地磁测量，以测试现有的地面沉积模型。研究结果对认识古生代拉皮岩的构造演化具有重要意义。

Previous paleomagnetic studies of Ordovician-aged volcanic rocks from the northern Appalachians indicate accretion of volcanic terranes to the margin of Laurentia was complete by the late Silurian to early Devonian. These terranes are thought to represent vestiges of lapetus Ocean. Their accretion was accompanied by considerable strike-slip motion. This study will use paleomagnetic measurements on Ordovician and Silurian rocks at the Laurentian margin of Newfoundland, New Brunswick, Quebec and Maine to test existing models of terrane accretion. The results will be of significance to understanding the tectonic evolution of lapetus through the Paleozoic.