A wiggle-match date for Polynesian settlement of New Zealand
A wiggle-match date for Polynesian settlement of New Zealand
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DOI：
10.1017/s0003598x00061408
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发表时间：
2003-03-01
期刊：
影响因子：
1.8
通讯作者：
Newnham, RM
中科院分区：
文献类型：
--
作者：
Hogg, AG;Higham, TFG;Newnham, RM
波利尼西亚人在新西兰的最初殖民和环境影响的时间是有争议的。一个关键的地平线是由塔拉韦拉火山喷发形成的Kaharoa Tephra提供的，因为就在这一层的下面是森林砍伐的第一个迹象，这意味着人类定居。作者使用了一根来自卡哈罗阿沉积物的芹菜松原木，通过“摆动匹配”，将原木中一系列样品的放射性碳年代与南半球校准曲线相匹配，得出了一个新的精确喷发日期。得到的日期是公元1314 +/- 12年（2西格玛误差），第一次环境影响和人类活动被认为发生在前60年，即公元13世纪末至14世纪初。这个日期与新西兰群岛考古遗址确定的最早定居日期是同时代的。
Dating initial colonisation and environmental impacts by Polynesians in New Zealand is controversial. A key horizon is provided by the Kaharoa Tephra, deposited from a eruption of Mt Tarawera, because just underneath this layer are the first signs of forest clearance which imply human settlement. The authors used a log of celery pine from within Kaharoa deposits to derive a new precise date for the eruption via 'wiggle-matching'--matching the radiocarbon dates of a sequence of samples from the log with the Southern Hemisphere calibration curve. The date obtained was 1314 +/- 12 AD (2 sigma error), and the first environmental impacts and human occupation are argued to have occurred in the previous 60 years, i.e. in the late 13th-early 14th centuries AD. This date is contemporary with earliest settlement dates determined from archaeological sites in the New Zealand archipelago.