摘要
报道了第二批鹿牙样品的测年结果。采用新近发展的非线性拟合外推法获得样品的累积剂量。应用适合于牙釉质层样品的剂量率公式,计算了四种铀吸收模式的ESR年龄及其误差,得出了北京猿人遗址含有北京猿人头盖骨地层的年代分别为:第11层575±101ka,第8—9层409±72ka,第6—7层365±64ka和第3层290±51ka。
The result of ESR dating for the second group of samples from Peking Man Site is presented. Non- linear fitting and the dose rate formula for tooth enamel are adopted to calculate ESR ages and their errors based on four kinds of U- uptake models .The ages are estimated to be 575±101 ka for the 11th layer (containing the first skull of Peking Man),409±72 ka for the 8- 9th layer(skulls LⅠ,LⅡ and LⅢ),365±64 ka for the 6- 7th layer, and 290±51 ka for the 3rd layer(skull HⅢ).
出处
《核技术》
CAS
CSCD
北大核心
1993年第4期208-212,共5页
Nuclear Techniques
关键词
测年
北京猿人遗址
电子自旋共振
ESR dating Non- linear fitting U- uptake model Radon escape Peking Man Site
