U-Pb Geochronology of U-, Th- & REE-Enriched Minerals Formed during Prograde Regional Metamorphism of Metapelites

U-、Th- 的 U-Pb 地质年代学

• 批准号: 9118051
• 负责人: Gilbert Hanson
• 金额: $ 11.2万
• 依托单位: SUNY at Stony Brook
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1991
• 资助国家: 美国
• 起止时间: 1991-12-15 至 1994-11-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9118051&HistoricalAwards=false
• 关键词: Pb; Geochronology; Th; & REE

The principal investigator will (1) evaluate the budget of the rare earth elements, as well as U and Th, in the Wepawaug Schist of south central Connecticut, and (2) develop techniques for precisely determining the prograde temperature-pressure-time history of pelitic metamorphic rocks. This work will help constrain the absolute time of formation of important minerals, and in turn give geologists critical information needed to interpret rock ages and geologic events.

首席调查者将(1)评估康涅狄格州中南部Wepawaug片岩中稀土元素以及U和Th的收支，(2)开发准确确定泥质变质岩进动温度-压力-时间历史的技术。这项工作将有助于限制重要矿物的绝对形成时间，进而为地质学家提供解释岩石年龄和地质事件所需的关键信息。