Experimental Development of a Geochronometer Based on ESR- Detected, Radiation-Induced Defects in Quartz: CollaborativeInvestigation Between FSU and L-DGO

基于 ESR 检测到的石英辐射诱发缺陷的地质计时仪的实验开发：FSU 和 L-DGO 之间的合作研究

• 批准号: 9006439
• 负责人: A. Leroy Odom
• 金额: $ 8.05万
• 依托单位: Florida State University
• 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: 1991-03-01 至 1993-11-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9006439&HistoricalAwards=false
• 关键词: Experimental; Development; Geochronometer; Based; ESR

The principal investigators, in collaboration with Alan Zindler at Columbia University, will attempt to develop a quartz geochronometer and geothermometer. He will do so by examining the number of Schottky-Frenkel defects in natural quartz using electron spin resonance spectroscopy, then determining the age of the quartz via improved uranium-thorium dating techniques, thereby establishing the rate of accumulation of the defects. Through annealing experiments a study also will be made of the thermal stabilities and mean lives of the defects; this in turn could provide a basis for a geologically useful geochronometer. Since quartz is a common minerals, development of this tool could have wide application, and would be particularly useful for rocks in which other methods cannot be applied. The understanding of defects in quartz also will benefit the semiconductor industry.

主要研究人员将与哥伦比亚大学的 Alan Zindler 合作，尝试开发石英地质计时仪和地温计。 他将使用电子自旋共振光谱检查天然石英中肖特基-弗兰克尔缺陷的数量，然后通过改进的铀-钍测年技术确定石英的年龄，从而确定缺陷的积累率。 通过退火实验，还将研究缺陷的热稳定性和平均寿命；这反过来又可以为地质上有用的地球计时仪提供基础。 由于石英是一种常见矿物，因此该工具的开发可能具有广泛的应用，并且对于其他方法无法应用的岩石特别有用。 对石英缺陷的了解也将使半导体行业受益。