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最新一期自然杂志封面:黑体大写的英文双关语:“北京猿人真酷(
新浪科技讯 北京时间3月12日消息,据国外媒体报道,
他们通过最新测年技术发现,
普渡大学的大气学家、这篇论文的联合作者达里尔·格兰杰表示,
想象一下生活在加拿大卡尔加里“寒冷干燥的”冬季,
史密森学会人类起源专家里克·波特斯没参与这项研究,他说:“
首先是火的因素。早期的考古已经发现,
第二,使用毛皮。
第三,直立人通过进化,已经适应了那种寒冷环境。
波特斯表示,最后一种猜测最有意思。 跟大部分现代穴居人一样,北京猿人可能已经发生一些生理改变,
这些不是亚洲最古老的人类,
利用碳-14或铀测年的一般方法,无法测定这么久远的东西,
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【相关链接】
在线阅览《自然杂志》(Chinese Journal of Nature)
【附 原文出处】
Nature 458, 198-200 (12 March 2009) | doi:10.1038/nature07741
Age of Zhoukoudian Homo erectus determined with 26Al/10Be burial dating
Guanjun Shen1, Xing Gao2, Bin Gao1 & Darryl E. Granger3
1 College of Geographical Sciences, Nanjing Normal University, Nanjing, Jiangsu 210046, China
2 Institute of Vertebrate Paleontology and Paleoanthropology, Academia Sinica, Beijing 100044, China
3 Department of Earth and Atmospheric Sciences, Purdue University, West Lafayette, Indiana 47907-2051, USA
4 Correspondence to: Guanjun Shen1Darryl E. Granger3 Correspondence and requests for materials should be addressed to G.S.
The age of Zhoukoudian Homo erectus, commonly known as 'Peking Man', has long been pursued, but has remained problematic owing to the lack of suitable dating methods1, 2, 3, 4, 5, 6, 7. Here we report cosmogenic 26Al/10Be burial dating of quartz sediments and artefacts from the lower strata of Locality 1 in the southwestern suburb of Beijing, China, where early representatives of Zhoukoudian Homo erectus were discovered. This study marks the first radioisotopic dating of any early hominin site in China beyond the range of mass spectrometric U-series dating. The weighted mean of six meaningful age measurements, 0.77 0.08 million years (Myr, mean s.e.m.), provides the best age estimate for lower cultural layers 7–10. Together with previously reported U-series dating of speleothem calcite3 and palaeomagnetic stratigraphy4, as well as sedimentological considerations8, 9, these layers may be further correlated to S6–S7 in Chinese loess stratigraphy or marine isotope stages (MIS) 17–19, in the range of 0.68 to 0.78 Myr ago. These ages are substantially older than previously supposed and may imply early hominin's presence at the site in northern China through a relatively mild glacial period corresponding to MIS 18.
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