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

合作研究：马萨诸塞州波士顿周围新英格兰东南部阿瓦隆带的新元古代-下古生代演化：地质年代学和古地磁学测试

• 批准号: 9725828
• 负责人: Anne Grunow
• 金额: $ 5.67万
• 依托单位: Ohio State University Research Foundation -DO NOT USE
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1998
• 资助国家: 美国
• 起止时间: 1998-06-01 至 2001-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9725828&HistoricalAwards=false
• 关键词: COLLABORATIVE; RESEARCH; Neoproterozoic; Lower; Paleozoic

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.

9725828格鲁诺 阿瓦隆是沿着冈瓦纳大陆边缘形成的复合碎屑岩，在中古生代穿越古洋土卫八与劳伦大陆碰撞，是全球板块再造的重要组成部分。 沿着北美东海岸，阿瓦隆的碎片分布在纽芬兰、新斯科舍省、新玩法、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以重建原始的复合碎片，需要每个碎片的年龄和空间信息。 该项目将收集阿瓦隆地区西南部新英格兰阿瓦隆区波士顿盆地部分的年龄和古地磁确定的古磁极数据。 当与其他阿瓦隆超大陆的类似数据相结合时，结果将允许重建原始的阿瓦隆超大陆或超大陆，并阐明其与冈瓦纳超大陆的关系。