• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Quaternary geochronology >How C-14 dates on wood charcoal increase precision when dating colonization: The examples of Iceland and Polynesia
【24h】

How C-14 dates on wood charcoal increase precision when dating colonization: The examples of Iceland and Polynesia

机译：C-14如何在约会定殖时的木炭上提高精度：冰岛和波利尼西亚的例子

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Archaeological chronologies use many radiocarbon (C-14) dates, some of which may be misleading. Strict 'chronometric hygiene' protocols, which aim to enhance the overall accuracy and precision of C-14 datasets by removing all potentially problematic samples, mean that so few dates remain in some locations that accurate chronologies cannot be established. C-14 dates on charcoal can be affected by an 'old-wood' effect, and so they are often removed from analyses, despite 40,000 being available worldwide, representing $25 million. We show that when a Bayesian chronological model is used, which incorporates an Outlier Model specific to wood charcoal, the C-14 dataset of Iceland's Viking Age settlement agrees well with ice core-dated tephrochronology and written sources. Greatest accuracy comes from an even temporal distribution of C-14 dates and more dates lead to greater precision ( 20 years). This shows how charcoal-based C-14 chronologies can pinpoint the transformational human settlement of islands in the Atlantic, Oceania, and elsewhere.
机译：考古时间阶段使用许多无线电金（C-14）日期，其中一些可能是误导性的。严格的“编音卫生卫生”协议，旨在通过去除所有可能的有问题样本来提高C-14数据集的整体准确性和精度，意味着在某些位置无法建立准确的时间表的某些位置仍然很少。 C-14炭的日期可以受到“旧木材”效应的影响，因此尽管如此，它们通常会从分析中删除;全球可用40,000次，代表＆ 2500万美元。我们表明，当使用贝叶斯时间按比例模型时，冰岛的Viking Age Settlement的C-14 Dataset与冰核核心的Teprochronology和书面来源很好。最大的准确性来自C-14日期的甚至时间分布，更多的日期导致更高的精度（＆ 20年）。这表明基于木炭的C-14时间顺序如何确定大西洋，大洋洲和其他地方的转型人类沉降。

著录项

相似文献

  • 外文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号