COLLABORATIVE RESEARCH: Neoproterozoic-Lower Paleozoic Evolution of the Southeastern New England Avalon Zone AroundBoston, MA: Tests from Geochronology and Paleomagnetism

9725828 Grunow Avalon是沿Gondwana边缘形成的复合地体，在中古生代穿越古洋Iapetus与Laurentia碰撞，是随后全球板块重构的重要组成部分，Avalon的碎片在较年轻的造山运动中漂移，现在出现在大西洋两岸。沿着北美东海岸，阿瓦隆的碎片出现在纽芬兰、新斯科舍省、新不伦瑞克、新英格兰东南部和大西洋中部沿海各州。为了准确地重新定位这些碎片，重建原始复合地形，需要每个碎片的年龄和空间信息。该项目将收集新英格兰西南部阿瓦隆带波士顿盆地部分阿瓦隆的年龄和古地磁确定的古极点数据。当结果与其他阿瓦隆地体的类似数据相结合时，将允许重建原始地体或超地体，并阐明其与冈瓦纳超大陆的关系。

9725828 Grunow Avalon is a composite terrane that formed along the margin of Gondwana and crossed the ancient ocean Iapetus to collide with Laurentia by mid-Paleozoic time, thus is an important element in global plate reconstruction subsequently, fragments of Avalon drifted during younger orogenics and now present on both sides of the Atlantic. Along the east coast of North America, fragments of Avalon occur in Newfoundland, Nova Scotia, New Brunswick, southeastern New England in the coastal mid-Atlantic states. In order to accurately re-position these fragments to reconstruct the original composite terrane age and spatial information from each is required. This project will gather age and paleomagnetically determined paleopole data for Avalon in the Boston Basin portion of the Southwestern New England Avalon Zone. Results when combined with similar data from other Avalon terranes, will allow reconstructions for the original terrane or superterrane and illuminate its relationship to the Gondwana supercontinent.