A study on social structure of early and middle kofun period in terms of production and distribution of bracelet shape stone products

2021 Fiscal Year Final Research Report

• Project/Area Number: 19K23116
• Research Category: Grant-in-Aid for Research Activity Start-up
• Allocation Type: Multi-year Fund
• Review Section: 0103:History, archaeology, museology, and related fields
• Research Institution: Natural History Museum and Institute, Chiba (2021); Waseda University (2019-2020)
• Principal Investigator: ISHII YUUNA 千葉県立中央博物館, その他部局等, 研究員(移行) (00849755)
• Project Period (FY): 2019-08-30 – 2022-03-31
• Keywords: 古墳 / 石釧 / 製作技術 / 三次元計測 / 穿孔技術

Outline of Final Research Achievements

This is a study to clarify when, where, when, where, and in what range and with what logic,the bracelet shape stone products to be stored in the Kofun period burial mounds are manufactured, and how they are distributed in the background. The aim was to clarify whether there was a movement of the royal power and the regional chief.
During the research, I conducted actual observations at the holding organization of the materials and collected detailed information on materials and manufacturing techniques. In addition, I devised a quantitative shape analysis method using 3D data and image analysis software, and focused on the stone engraving technique. As a result of study the production system of bracelet shape stone based on these, it was clarified that there may have been a change in the production system aimed at mass production of bracelet shape stone in the latter half of the early Kofun period.

Free Research Field

考古学

Academic Significance and Societal Importance of the Research Achievements

本研究の成果として、石釧の生産・流通体制に一定の見通しが得られたことがあげられる。石釧をはじめとする腕輪形石製品の出現や展開は当時の倭王権の動態と強く結びついており、これらの器物の研究は、当時の社会を検討する上で欠かせない。これまでの研究で最も生産・流通体制について見解の分かれていた石釧に関する新たな知見が得られたことで、この器物を用いた当時の社会構造を検討するうえで新たな情報が取得できた点に、本研究の学術的・社会的意義があると考える。