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。对陶器上烧焦的材料的稳定同位素研究在陶器上最烧焦的材料显示出典型的土地来源，大约每公里的Delta -13c价值约为-26。这种样本与考古观察非常吻合。 Delta-13c值较高的样品可能会受到低C/N比的海洋来源和分离的Delta-15N的影响。很少有样本显示出更高的Delta-13c值，并具有一致的放射性碳日期，表明烧焦的材料源自C4植物，例如Millet.2。在北海道岛和北东部北部地区发掘的日本群岛北部地区发掘的陶瓷材料的放射性碳年代通常显示出中度的三角洲-13c值（每公里大约-24 mil）和高c/n比率，而较高的c/n比率具有比预期的。海洋哺乳动物不能成为这种烧焦材料的来源，而化石燃料的使用可能是3。烧焦的材料对烧焦的物质G-MS和FT-IR测量的表征进行了烧焦的材料，但这并不成功。应改进从样品和化学预处理中提取挥发物。另一方面，稳定的同位素测量将是估计陶器烧焦材料来源的好工具。

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