Chipped stone axe

Japanese: 打製石斧 - だせいせきふ

A chipped stone tool in the shape of a stone axe. It can be used for a variety of purposes, including as a cutting tool, woodworking tool, or earth digging tool. In Japan, along with stone arrowheads and stone spoons, it was a common stone tool in the Jomon period. Some of them survive into the Yayoi period. Based on function and form, they can be broadly divided into two types: straight-edged axes, which were used like hand axes and were distributed in Hokkaido, Tohoku, and Kanto during the early to middle Jomon period, and other chipped stone axes used as earth digging tools. Based on their planar shape, chipped stone axes can be divided into rectangular, short-edged, mallet-shaped, with a blade 1.5 times wider than the base, and double-headed, weight-shaped, with large gouges on both central edges.

Source: Heibonsha World Encyclopedia, 2nd Edition Information

Japanese:

石斧形をした打製石器。伐採具，木工具，土掘具など種々の機能が考えられる。日本では石鏃や石匙などとともに，縄文時代に一般的な石器。一部弥生時代にまで残る。機能･形態上から，縄文時代早期～中期の北海道･東北･関東地方に分布する，手斧（ちような）のように用いる直刃（すぐは）片刃の〈直刃斧〉と，土掘具であるその他の打製石斧とに二大別できる。打製石斧はその平面形から，長方形に近い短冊形と，刃部が基部幅の1.5倍以上ある撥（ばち）形と，中央両側縁に大きな抉り（えぐり）のある両頭の分銅形とに分かれる。

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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