深海岩心有孔虫壳ESR测年的初步研究

Preliminary Study on ESR dating of foraminifera samples from the deep-ocean core

用Ｕ的早期积累模式测定了中太平洋西部岩心有孔虫样品的ＥＳＲ年龄．所取５个层段样品年龄处于５０．１—２９８ｋａ，年龄误差为±１８％．从而为超出１４Ｃ测年范围的有孔虫样品提供了一种可行的定量测年方法．

ESR dating of the foraminifera samples from the west side of middle Pacific Ocean has been performed. It is shown that the ages of five samples collected from dtherent sections of the deep-ocean core are 50.1× 103, 82.4×103 159×103, 252× 103and 298× 103 years, respectively, with the relative error of ±18%.