Precise radiocarbon dating of charred materials on potsherds by means of their characterization

通过表征对陶瓷碎片上烧焦的材料进行精确的放射性碳测年

• 批准号: 15300295
• 负责人: SAKAMOTO Minoru
• 金额: $ 10.82万
• 依托单位: National Museum of Japanese History
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2003
• 资助国家: 日本
• 起止时间: 2003 至 2004
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-15300295/
• 关键词: ancient pottery; radiocarbon dating; AMS; stable isotope; carbon to nitrogen ratio; marine reservoir effect; food usage; C3, C4 plants; 炭素14年代; δ^<13>C; δ^<15>N; 脂質

1. Stable isotope research of charred materials on potsherdsMost of charred materials on potsherds showed typical land source, about -26 per mil of delta-13C value. Such sample was in good agreement with archaeological observation. Samples with higher delta-13C value might be affected by marine source of a low C/N ratio and fractionated delta-15N. Few sample showed much higher delta-13C value with coincide radiocarbon date, indicating that the charred material was derived from C4 plant such as millet.2. Radiocarbon dating of charred material on potsherds excavated in northern part of Japanese archipelagoSamples excavated in Hokkaido Island and northern Tohoku region often show moderate delta-13C value (ca. -24 per mil) and high C/N ratio with older radiocarbon age than expected. Marine mammals cannot be the source of such charred material, while usage of fossil fuel, peat for instance, might be likely.3. Characterization of charred materialGC-MS and FT-IR measurement were carried out on charred materials, however these were not successful. The extraction of volatiles from sample and chemical pretreatment should be improved. On the other hand, stable isotope measurement will be a good tool for estimation of the source of charred materials on pottery.

1. 陶片烧焦材料的稳定同位素研究 大多数陶片烧焦材料显示出典型的陆地来源，δ13C 值约为-26 per mil。该样本与考古观察结果非常吻合。具有较高 delta-13C 值的样品可能会受到低 C/N 比和分馏 delta-15N 的海洋来源的影响。很少有样品显示出较高的δ13C值，这与放射性碳测年结果一致，表明烧焦的物质来自C4植物，例如小米。2．对日本列岛北部出土的陶片烧焦物质进行放射性碳测年在北海道岛和东北北部地区出土的样品通常显示出中等的 delta-13C 值（约-24/密耳）和较高的 C/N 比，且放射性碳年龄比预期要老。海洋哺乳动物不可能是这种烧焦物质的来源，而化石燃料（例如泥炭）的使用则可能是3。烧焦材料的表征对烧焦的材料进行了 GC-MS 和 FT-IR 测量，但这些测量并不成功。样品中挥发物的提取和化学预处理有待改进。另一方面，稳定同位素测量将成为估计陶器烧焦材料来源的良好工具。

项目成果

安定同位体比に基づく土器付着物の分析

基于稳定同位素比的陶矿床分析

• 发表时间: 2007
• 期刊: 国立歴史民俗博物館研究報告 137
• 作者: 成田 滋;長瀬久明;筱 更治;坂本 稔
• 通讯作者: 坂本 稔

Characterization of Charred materials on Potsherds by Means of Stable Isotope Analysis

通过稳定同位素分析表征陶瓷片烧焦材料

• 发表时间: 2007
• 期刊: Bulletin of the National Museum of Japanese History 86
• 作者: Tatsuro Shinchi;Sakamoto Minoru
• 通讯作者: Sakamoto Minoru