【正】 本文报告用铀子系法测量许家窑旧石器文化遗址出土的哺乳动物化石年代的初步结果。 山西省阳高县许家窑遗址的发现不仅在研究石器的文化传统上有重要的意义,而且在地层上证实了桑干河流域早更新统标准地层“泥河湾层”的上部还包括了晚更新世的沉积物。
Six fossil teeth of Equus and Coelodonta, antiquitatis from the Palaeolithic Site of Xujiayao were dated by uranium series method. The samples gave an internal concordant 230Th/234U age of about 100,000 years.The measured M1Pa/"5U ratios showed that these tooth samples were not of a closed system. Uranium had continuously been migrating in after fossilization. Nevertheless the 230Th/234U age can definitely serve as the upper limit of Xujiayao Site age.The basic principle and technique of dating are described in the paper.
Acta Anthropologica Sinica
uranium series dating
Xujiayao Palaeolithic Site