26Al/10Be burial dating of Xujiayao-Houjiayao site in Nihewan Basin, northern China.

26Al/10Be burial dating of Xujiayao-Houjiayao site in Nihewan Basin, northern China.
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中国北方泥河湾盆地徐家窑-侯家窑遗址的 26Al/10Be 埋藏年代

DOI:
10.1371/journal.pone.0118315
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发表时间:
2015
期刊:
影响因子:
3.7
通讯作者:
Granger DE
Granger DE
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Tu H;Shen G;Li H;Xie F;Granger DE

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泥河湾盆地的许家窑-侯家窑遗址是中国最重要的旧石器时代遗址之一,因为它提供了丰富的人类和哺乳动物化石和石器文物。根据生物地层对比和各种测年方法的探索结果,该地点被广泛认为是上更新世早期。然而,最近的古地磁分析认为它的年龄要大得多,为~ 500 ka(千年)。本文报道了26Al/10Be埋藏定年法作为独立检验方法的应用。两个较低文化层位石英样品的加权平均年龄为0.24±0.05 Ma(百万年,1σ)。因此,该地点在95%的置信度下小于340 ka,这与以前的古地磁结果不同。另一方面,我们的结果表明,该遗址的较低文化沉积物的年龄超过140 ka,这与最近的后红外红外激发发光(pIR-IRSL)定年在160-220 ka一致。
The Xujiayao-Houjiayao site in Nihewan Basin is among the most important Paleolithic sites in China for having provided a rich collection of hominin and mammalian fossils and lithic artifacts. Based on biostratigraphical correlation and exploratory results from a variety of dating methods, the site has been widely accepted as early Upper Pleistocene in time. However, more recent paleomagnetic analyses assigned a much older age of ∼500 ka (thousand years). This paper reports the application of 26Al/10Be burial dating as an independent check. Two quartz samples from a lower cultural horizon give a weighted mean age of 0.24 ± 0.05 Ma (million years, 1σ). The site is thus younger than 340 ka at 95% confidence, which is at variance with the previous paleomagnetic results. On the other hand, our result suggests an age of older than 140 ka for the site’s lower cultural deposits, which is consistent with recent post-infrared infrared stimulated luminescence (pIR-IRSL) dating at 160–220 ka.
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