Angular stone tools

Japanese: 有角石器 - ゆうかくせっき

It is a type of weapon-shaped stone product from the Yayoi period found only in eastern Japan, and about 50 examples have been excavated so far. As most of them were collected without excavation surveys, they were once thought to be special relics from the Jomon period, but recently, an increasing number of items have been excavated from settlements, such as pit dwellings, and it has become clear that they were treated in the same way as everyday tools from the same period. They have a fan-shaped axe-like blade with horn-shaped protrusions on both ends and a rod-shaped handle at the base, and range in length from 11 cm to 19 cm, and many are made of senryokan stone.

Source: Heibonsha World Encyclopedia, 2nd Edition Information

Japanese:

東日本のみに分布する弥生時代の武器形石製品の一種で，これまでに約50余例が出土している。そのほとんどが発掘調査によらない採集品であったことから，縄文時代の特殊な遺物と考えられたこともあったが，最近では竪穴住居内など，集落からの出土品が増え，同時代の日常生活用具と同類の扱いをうけていたことがわかった。その形は，扇状に広がった斧様の刃部両端に，角状の突起をもち，基部は棒状の柄となり，全長11cm余から19cm余までのものがあり，石材にはセン緑岩を用いたものが多い。

出典　株式会社平凡社世界大百科事典第２版について　情報

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