2023 Fiscal Year Final Research Report

Research on Migration and Exchange during the Jomon Period through Microscopic Observation of Jomon Pottery

Research Project

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Project/Area Number	21K00963
Research Category	Grant-in-Aid for Scientific Research (C)
Allocation Type	Multi-year Fund
Section	一般
Review Section	Basic Section 03050:Archaeology-related
Research Institution	Independent Administrative Institution National Institutes for Cultural Heritage Tokyo National Research Institute for Cultural Properties (2022-2023) Kanagawa Prefectural Museum of Cultural History (2021)
Principal Investigator	CHIBA Tsuyoshi 独立行政法人国立文化財機構東京文化財研究所, 保存科学研究センター, 研究員 (70589845)
Project Period (FY)	2021-04-01 – 2024-03-31
Keywords	縄文時代 / 縄文土器 / 色調 / 粘土 / 分光測色 / 蛍光X線
Outline of Final Research Achievements	This study focuses on "microscopic production traces," which have not been the focus of previous Jomon pottery typological studies, and aims to depict the details of human group migrations, emigrations, and interactions between groups during the Jomon period. In particular, to examine selectivity by color tone during the collection of material clay for Jomon pottery, measurements were made with a spectrophotometer. Color tone measurements and X-ray fluorescence analysis were conducted on a group of pottery from the Middle Jomon Period in the Niigata Prefecture area. The results showed that the color tone tended to vary depending on the site location and classification. Specifically, a correlation between Fe2O3 and reddish-brown color saturation, and a slight correlation between SiO2 and lightness/saturation were noted as trends. Trends in color tone could be pointed out for each site as well. The cohesion by type cannot be positively pointed out at present.
Free Research Field	考古学
Academic Significance and Societal Importance of the Research Achievements	本研究においては、明らかな付着物等を除く残存器面の面積に応じて測定箇所を増やし、その組み合わせ及び平均値によって対象土器の色調を表現する方法を試行している。色調の計測には小型分光測色計を使用し客観性、再現性の向上を図っている。これらにより、従来のやや感覚的な分析に比べ精度の高い色調分析が可能となる。その結果、地域による土器色調のまとまりを予見することができた。従来の型式学的な研究と相互に参照することで、縄文時代人の認識を探るための重要な成果となり得るものである。