摘要
磷灰石He封闭温度是目前已知定年体系中最低的,能够反映低温价段(40~90℃)的热历史信息,该方法现已成为低温热年代学领域研究的重要手段。本文概述了磷灰石(U-Th)/He定年方法的原理、校正、实验流程、应用以及存在的问题。其中,重点介绍了近几年国内外(U-Th)/He定年中辐射损伤研究的进展,主要包括以下几个方面:①辐射损伤的原理:捕获模型的提出及应用;②辐射损伤对磷灰石(U-Th)/He定年的影响;③新模型的提出:辐射损伤累积-退火模型;④辐射损伤的实际应用。
The apatite (U-Th)/He dating method has been proved to be a powerful and useful tool in the field of low-temperature thermochronology, because it has the lowest available He closure temperature and can reflect the information of the thermal histories at low temperature (40--90℃). This review gives a brief account of the principles, calibrations, laboratory procedures, applications and existing problems of the method, highlighting the progress of the study of radiation damage in recent years. The main content of this paper includes: (1) the principle of the radiation damage and the development of the "trapping model"; (2) the effect of the radiation damage on apatite (U-Th)/He dating; (3) the development of the new model, i.e. , the Radiation cumulation and Annealing Model; (4) the Applications of the radiation damage.
出处
《岩石矿物学杂志》
CAS
CSCD
北大核心
2012年第5期757-766,共10页
Acta Petrologica et Mineralogica
基金
国家自然科学基金中美重大国际合作项目(40921120406)