| 北京猿人遗址年代上限再研究 |
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| 引用本文： | 沈冠军,金林红.北京猿人遗址年代上限再研究[J].人类学学报,1991,10(4):273-277. |
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| 作者姓名： | 沈冠军 金林红 |
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| 作者单位： | 贵州大学化学系，贵州大学化学系 贵阳 550025，贵阳 550025 |
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| 摘 要： | 本文报道了取于北京猿人遗址第1-2层的二个钙板样的铀系年龄。下列实验证据支持数据的可信度：二个样品的定年结果在误差范围内一致且230Th/234U值均接近平衡；BZC-3样三次230Th/234U年龄测定获一致结果；230Th/234U和227Th/230Th二法对照的结果表明BZC-3样构成封闭体系。基于BZC-3样三次平行分析所得同位素比值的加权平均值，提出北京猿人遗址的上限年龄应为 万年。
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| 关 键 词： | 北京猿人遗址 钙板 铀系年代 |
RESTUDY OF THE UPPER AGE LIMIT OF BEIJING MAN SITE |
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| Shen Guanjun Jin Linhong.RESTUDY OF THE UPPER AGE LIMIT OF BEIJING MAN SITE[J].Acta Anthropologica Sinica,1991,10(4):273-277. |
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| Authors: | Shen Guanjun Jin Linhong |
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| Abstract: | This paper presents the U-series dating of two calcite samples taken from a traavertinlayer interstratified in 1--2 layer at Locality 1 of Beijing Man Site. The reli-ability of the obtained results is supported by following evidences:The results oftwo samples are consistent within thestatistical error of+ 1o and their 230^Th/234^Uratios all near to equilibrium; Three parallel 230^Th/234^U age determinations of BZC-3 give consistent results; Concordance between 230^Th/234^U and 227^Th/230 ^Th ages indicatesa closed system of BZC-3. Based on the weighted mean of isotopic ratiosof three230Th/234Uanalyses of BZC-3, the upper age limit of Beijing Man Site should be(42±-5^11) x 10^4 years. |
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| Keywords: | Beijing Man Site Travertin layer U-series age |
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