AMS 14C chronology of the world's southernmost woolly mammoth (Mammuthus primigenius Blum.)
AMS 14C chronology of the world's southernmost woolly mammoth (Mammuthus primigenius Blum.)
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DOI：
10.1016/j.quascirev.2006.12.001
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发表时间：
2007-04
影响因子：
4
通讯作者：
Keiichi Takahashi;Guang-biao Wei;Hikaru Uno;M. Yoneda;Chang-zhu Jin;Chengkai Sun;S. Zhang;Bei Zhong
中科院分区：
文献类型：
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作者：
Keiichi Takahashi;Guang-biao Wei;Hikaru Uno;M. Yoneda;Chang-zhu Jin;Chengkai Sun;S. Zhang;Bei Zhong
世界上最南端的猛犸象记录是来自中国山东省济南市（北纬约 36°）的臼齿。对样本进行 AMS14C 测年，得出常规 14C 年龄为 33,150±250BP。 40-30kaBP时期对应于海洋氧同位素阶段3（MIS 3a）的后期，被认为是末次冰期的全球间质层。然而，已知亚洲冬季风在35-33kaBP期间加强，济南猛犸象标本的年龄与该年龄相对应。标本表明，该地区在 33kaBP 内变得寒冷干燥，在这段短暂的时间内，草原或开阔的森林发展起来，成为猛犸象的适宜栖息地。这个年龄与欧洲最南端猛犸象记录的年龄相似，因此支持了波特和安的假设[1995。末次冰期北大西洋与中国气候事件的相关性. Nature 375, 305–308]认为中国古气候的一个重要组成部分可能与北大西洋海洋条件的变化有关。
The world's definite southernmost woolly mammoth record is a molar from Ji’nan (around 36°N), Shandong Province, China. AMS14C dating of the specimen, gave a conventional14C age of 33,150±250BP. The period of 40–30kaBP corresponds to the later phase of the Marine Oxygen Isotope Stage 3 (MIS 3a), recognized as the global interstadial of the last glacial period. However, it is known that the winter monsoon strengthened in Asia during the period 35–33kaBP, and the age of the woolly mammoth specimen from Ji’nan corresponds to that age. The specimen suggests that this area became cold and dry in 33kaBP, and grassland or open forest, suitable habitat for woolly mammoths, developed during this short time span. This age is similar to the age of the southernmost woolly mammoth record in Europe, therefore supporting a hypothesis by Porter and An [1995. Correlation between climate events in the North Atlantic and China during the last glaciation. Nature 375, 305–308] that an important component of Chinese palaeoclimates may be linked to changes in North Atlantic oceanic conditions.