【作者】 尹功明； 林敏；

【Author】 YIN Gongming~1) LIN Min~1,2) 1)State Key Laboratory of Earthquake Dynamics,Institute of Geology,China Earthquake Administration,Beijing,100029;2)Radiometrology Center,China Institute of Atomic Energy,Beijing,102413

【机构】 中国地震局地质研究所地震动力学国家重点实验室；

【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′心的古剂量值,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。更多还原

【Abstract】 It is difficult to conduct dating for Quaternary sediments older than 200 000 years.ESR can probably meet the require-ment.This paper gives the paleo-doses obtained by using E’center for modern sediments collected from different areas.All of the re-sults are smaller than 4 000 Gy,which is inconsistent with the evaluation of light decay in laboratory.This might be attributed tosome other unknown reasons which require further investigation.更多还原