Research Progress of the Resetting Features of Quartz ESR Signal
详细信息
- 责任者：Liu Chunru (State Key Laboratory of Earthquake Dynamics ; Institute of Geology ; China Earthquake Administration ; Beijing 100029 ; China) ; Yin Gongming
- 刊名：Advances in Earth Science
- 出版年：2013
- 卷期：28(1)
- 关键词：ESR定年 ; ESR dating
- 页码：p.24-30
- 图表：illus., 59 refs.
- 分类号：1300
- issnNo：ISSN1001-8166
- isbnNo：CN62-1091/P
摘要
Electron Spin Resonance(ESR) has been becoming one of the key methods of Quaternary Geochronology with wide range of dating,especially for sample older than 200,000 years up to million-year scale.ESR dating assesses the age of a sample by measuring the equivalent dose and annual dose.The accurate measurement of equivalent dose significantly impacts on accuracy and reliability of ESR dating method.Under ideal conditions,any previous acquired ESR intensity is reset to zero or a stable residual level that can be determined in the laboratory.Therefore,the study of the mechanisms of resetting processes is fundamental for accurate and reliable ESR dating.Since ESR dating method is applicable to the type of geological samples,including hydrothermal quartz veins,geological fault gouge and fluvial sediment,there are large differences in the mechanisms and characteristics of ESR signal resetting.In recent years,to understand the mechanism and characteristics of quartz ESR signal resetting of different geological samples,a series of laboratory simulation and field observation studies were carried out,which made lots of important breakthrough.In this paper,we summarize progress in ESR dating of quartz in Quaternary sediments and studies of resetting mechanisms with particular emphasis on fluvial sediments and prospects for future work.
© 2004-2018 中国地质图书馆版权所有 京ICP备05064691号 京公网安备11010802017129号 地址：北京市海淀区学院路29号 邮编：100083 电话：办公室：(+86 10)66554848；文献借阅、咨询服务、科技查新：66554700 |