Maintenance and management of obsidian in southern Hokkaido during the Jomon period: With a special focus in the Koren 5 site, Kikonai town

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  • 縄文時代の北海道南部における黒耀石の運用形態 ─ 木古内町幸連5遺跡を対象に ─

Abstract

This article aims to discuss how obsidian was used in southern Hokkaido during the Jomon period by performing microwear analysis on obsidian artifacts excavated from Koren 5 Site in Kikonai（that dates back to early-late Jomon） and examining the results comprehensively along with that of obsidian provenance analysis. 　The study demonstrated the variety in how non-local obsidian was utilized in the area, such as 1) short-term retention / careful handling of the material with little microwear detected, observed in arrowheads, 2) long-term retention / repeated and practical use of the material, observed in points, and 3) intended long-term retention of the material, observed in irregular-shaped stone tools. These complex methods of maintenance and management of non-local obsidian served as the foundation of the extensive distribution of raw materials and the wide-area network of humans during the Jomon period.

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