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.

北部阿巴拉契亚人包含许多异国情调的地形，在伊亚佩斯海洋封闭期间被吸收，涉及北美和劳伦蒂亚以及冈德瓦纳的元素。 但是，时间，几何和地层位置仍然尚不完全知道。 该项目将集中于缅因州最重要的地形之一阿瓦隆（Avalon）的西部边缘，以及加拿大东部的海上省，将涉及古磁性，地球人学和构造调查。 结果将有助于测试针对阿巴拉契亚喀里多尼亚带的大量对比构造场景，尤其是IAPETUS南部的主要ARC/Back Arc系统的构造环境和位置。