Paleomagnetism of the Avalonian Margin of Iapetus

土卫八阿瓦隆边缘的古地磁学

• 批准号: 9508316
• 负责人: Rob Van der Voo
• 金额: $ 13万
• 依托单位: Regents of the University of Michigan - Ann Arbor
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1995
• 资助国家: 美国
• 起止时间: 1995-07-15 至 1999-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9508316&HistoricalAwards=false
• 关键词: Paleomagnetism; Avalonian; Margin; Iapetus

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.

北方阿巴拉契亚山脉包含了一些外来的珊瑚，在伊阿珀托斯海洋关闭期间增加，涉及北美和劳伦蒂亚以及冈瓦纳的元素。 然而，时间，几何形状和位置仍然不完全知道。 该项目将侧重于缅因州的阿瓦隆西部边缘和加拿大东部的海洋省份，并将涉及古地磁、地质年代学和构造调查。 结果将是有用的，在测试大量的对比构造方案，已提出的阿巴拉契亚加里东带，特别是构造环境和位置的主要弧/弧后系统在南部的Iapetus。