《Table 1 Cosmogenic nuclide concentrations and simple burial ages of the vein quartz chunks from art

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《中国中部地区洛南盆地刘湾旧石器遗址的宇生核素埋藏测年研究（英文）》

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Minimum ages are obtained by assuming that the samples are completely shielded from cosmic rays after burial，without considering the nuclides produced during and after the depositional process caused by insufficient shielding against cosmic rays.

The AMS measurement of the three samples from the Liuwan site resulted in relatively good precision，namely，2%–4%for 26Al/27Al and approximately 2%for 10Be/9Be.The integrated precision percentages in nuclide concentration were 5%–6%and approximately 3%for 26Al and 10Be，respectively.Table 1 lists the nuclide concentrations and the corresponding simple burial ages.The simple burial ages（i.e.，LW-1:0.14±0.11 Ma；LW-2:0.20±0.13 Ma；and LW-3:0.60±0.12 Ma）were calculated by assuming that the samples did not experience prior burial and did not undergo post-burial production.