COLLABORATIVE RESEARCH: Structural and Isotopic Characterization of the Milton Belt, Axial Zone of the Southern Appalachians

合作研究：南阿巴拉契亚轴心带米尔顿带的结构和同位素特征

• 批准号: 9506363
• 负责人: James Hibbard
• 金额: $ 7.48万
• 依托单位: North Carolina State University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1995
• 资助国家: 美国
• 起止时间: 1995-07-01 至 1998-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9506363&HistoricalAwards=false
• 关键词: COLLABORATIVE; RESEARCH; Structural; Isotopic; Characterization

The history of terrane accretion associated with the Appalachian orogen has recently received renewed interest due to the possible interactions of laurentia and Gondwanan. Study of the Milton terrane, between North American rocks and peri-Gondwanan rock to the east has contradicted long-held views concerning the nature and timing of deformation of the Milton belt. This collaborative project will involve an integrated structural and isotopic study of the Milton belt to constraining deformation timing by determination of the crystallization ages of pre-, syn-, and post- tectonic plutons using high precision U-Pb zircon geochronology and other isotopic techniques. Results are expected to significantly revise the history of deformation of the Milton belt and will help clarify chemical and isotopic affinities to Gondwanan and/or Laurentia.

与阿巴拉契亚造山带有关的古陆增生的历史最近由于劳伦提斯和冈瓦纳可能的相互作用而重新引起人们的兴趣。 对北美岩石和东部冈瓦纳岩石之间的米尔顿带的研究与长期以来关于米尔顿带变形的性质和时间的观点相矛盾。 这一合作项目将涉及对米尔顿带进行综合结构和同位素研究，以通过使用高精度U-Pb锆石地质年代学和其他同位素技术确定构造前、同期和构造后深成岩体的结晶年龄来限制变形时间。 结果预计将显着修订的历史变形的米尔顿带，并将有助于澄清化学和同位素的亲和力冈瓦纳和/或劳伦。