摘要
第四纪碎屑沉积物测年，尤其是对老于距今二十万年以上的样品，是目前第四纪年代学中的难点。ESR是可望能够直接测定这类样品的测年方法之一。本文详细测量了从不同地区采集的现代沉积样品石英E’心的吉剂量值，其结果都小于4000Gy。这与实验室光晒退结果推测的并不一致。可能E’心存在目前还没有被了解的适合测年的内在原因，对于E’心能否真的用于沉积物测年有待于进一步的研究。
It is difficult to conduct dating for Quaternary sediments older than 200 000 years. ESR can probably meet the requirement. This paper gives the paleo-doses obtained by using E＇ center for modem sediments collected from different areas. All of the results are smaller than 4 000 Gy, which is inconsistent with the evaluation of light decay in laboratory. This might be attributed to some other unknown reasons which require further investigation.
出处
《地球学报》
EI
CAS
CSCD
北大核心
2005年第B09期252-254,共3页
Acta Geoscientica Sinica
基金
本文由国家自然科学基金项目（编号：40234040,40442005）资助.
