Application of U-Pb Systematics in Inherited Zircons to Terrane Accretion: Investigation of Plutonic Rocks from Eastern and Central Maine

U-Pb 系统学在继承性锆石与地体增生中的应用：对缅因州东部和中部的深成岩的调查

• 批准号: 8707942
• 负责人: Susan Eriksson
• 金额: $ 1.2万
• 依托单位: Virginia Polytechnic Institute and State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1987
• 资助国家: 美国
• 起止时间: 1987-07-15 至 1988-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8707942&HistoricalAwards=false
• 关键词: Application; Pb; Systematics; Inherited; Zircons

Recognition of inherited zircons of 3200 m.y. age in a mid-Devonian pluton in eastern Maine suggest that Archean basement may be present in parts of the northern Appalachians. This research will examine a number of plutons along a transect from southeastern to central Maine to establish whether small amounts of inherited zircons are present in plutons of different compositions with different emplacement histories. These plutons are present in areas previously interpreted as belonging to different source terranes. The present research would establish whether characterization of inherited zircons is a feasible techique for terrane recognition.

3200百万年继承锆石的再认识中泥盆世 缅因州东部的一个岩体表明， 阿巴拉契亚山脉北方的部分地区。 这项研究将研究一些 从缅因州东南部到中部的一个样带， 确定少量的继承锆石是否存在于 具有不同侵位历史的不同成分的岩体。 这些岩体存在于以前被解释为属于 不同的来源。 目前的研究将建立 继承锆石的特征是否是一种可行的技术， 得到认可。