AMS 14C dating of early human occupation of southern South America
AMS 14C dating of early human occupation of southern South America
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AMS 14C 测年南美洲南部早期人类占领
DOI：
10.1016/j.jas.2008.09.024
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发表时间：
2009
影响因子：
2.8
通讯作者：
G. Politis
中科院分区：
文献类型：
--
作者：
J. Steele;G. Politis
更新世晚期南美洲南部存在持久且人口统计上可行的狩猎采集人群的出现时间必须通过评估该地区尽可能大的候选考古遗址样本的证据来确定。我们协调了以下地点先前挖掘的地层中的多个骨骼和木炭样本的 AMS 测年：Arroyo Seco 2、Paso Otero 5、Piedra Museo 和 Cueva Tres Tetas（均位于阿根廷）以及 Cueva del Lago Sofia 1 和 Tres Arroyos（均位于智利）。除了一个可能的例外，我们没有获得新的结果来证实早期在本研究中考虑的任何地点对前克洛维斯时代文化活动的观察。可能的例外，Arroyo Seco 2，在别处详细考虑[Politis G., Gutierrez M.A., Scabuzzo, C. (Eds)，正在出版。实际调查地点为 Arroyo Seco（阿根廷潘皮纳地区）2 号地点。 Serie Monográfica INCUAPA 5. Olavarría]。然而，我们对最受青睐的文化事件指标样本（炉边木炭和切割标记的骨头）的结果证实，人们在 11,000 BP (13,000calBP) 或之后不久就生活在南美洲南锥体。与最近对北美克洛维斯文化的年龄估计一起考虑，这些结果意味着在西半球相距甚远的地点同时出现了一致且考古学上可靠的人类占领信号。这些发现表明，古印第安人的种群扩张可能涉及不止一次更新世末期的扩散事件。
The time of appearance of a persistent and demographically-viable hunter-gatherer population in late Pleistocene southern South America must be determined by evaluating evidence from as large as possible a sample of candidate archaeological sites in the region. We co-ordinated the AMS dating of multiple bone and charcoal samples from previously-excavated strata at the following sites: Arroyo Seco 2, Paso Otero 5, Piedra Museo, and Cueva Tres Tetas (all in Argentina), and Cueva del Lago Sofia 1 and Tres Arroyos (both in Chile). With one possible exception, we did not obtain new results to confirm earlier observations of pre-Clovis-age cultural activity at any of the sites considered in this study. The possible exception, Arroyo Seco 2, is considered in detail elsewhere [Politis G., Gutierrez M.A., Scabuzzo, C. (Eds), in press. Estado actual de las Investigaciones en el sitio 2 de Arroyo Seco (región pampeana, Argentina). Serie Monográfica INCUAPA 5. Olavarría]. However, our results for the samples which were the most preferred indicators of cultural events (hearth charcoal and cut-marked bone) confirm that people were in the southern cone of South America at or soon after 11,000BP (13,000calBP). Considered alongside recent age estimates for the Clovis culture in North America, these results imply the contemporaneous emergence of a consistent and archaeologically-robust human occupation signal at widely-separated locations across the Western Hemisphere. Such findings suggest that Palaeoindian demic expansion may have involved more than one terminal Pleistocene dispersal episode.