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首页> 外文期刊>Chinese science bulletin >U-series dating of Zhangkou Cave in Yiliang, Yunnan Province: Evidence for human activities in China during 40-100 ka
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U-series dating of Zhangkou Cave in Yiliang, Yunnan Province: Evidence for human activities in China during 40-100 ka

机译：云南省宜良市张口洞的U系列测年：中国40-100 ka期间人类活动的证据

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摘要

The cultural deposits at pits T1 and T2 in Zhangkou Cave are intercalated with several flowstone layers. U-series dates show that the capping and 2nd flowstone layers are Holocene of age. The 4th and 5th flowstone layers are ca, 55 and lift ka old respectively. The lithic artifacts bracketed by them provide unequivocal evidence for hominid presence during this time interval. The "temporal gap" of hominid fossil, widely quoted as in support of the out-of-Africa hypothesis, is most probably an artifact due to systematic errors of dating techniques. The infillings under 6th flowstone layer date to >300 ka, much older than the previous estimate at IS ka based on classical 14C dating of fossil bones, providing one more example of the limited reliability of this chronometer. With rich relics and favorable conditions for precise dating, this site is promising for further multidisciplinary studies to address issues concerning recent human evolution in China.
机译：张口洞T1和T2坑的文化沉积物夹有几块流石层。 U系列日期显示盖层和第二层流石层是全新世。第四和第五层流石层分别为ca，55和lift ka old。由它们包围的石器物为这一时间间隔内的人类存在提供了明确的证据。被广泛引用为支持非洲以外假设的原始人化石的“时间间隔”，很可能是由于测年技术的系统性错误造成的人工产物。第6块流石层下的充填物的日期可超过300 ka，比以前根据化石骨骼的经典14C测年法在IS ka上的估计要早得多，这提供了该计时器的有限可靠性的又一个示例。该遗址拥有丰富的文物和精确的年代测定的有利条件，有望为进一步的多学科研究解决与中国近代人类进化有关的问题。

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