Geometric Microliths

Japanese: 幾何学形細石器 - きかがくけいさいせっき
Geometric Microliths

...One type is stone tools made using small stone blades (approximately 1-1.5 cm wide and a few centimeters long) that are thought to be a miniaturized or scaled-down version of the stone blade technique found in areas spanning Europe, Africa, Western Asia, and India. These are called micro-burins, which are small chisels made by gouging the side of a small blade and breaking it off at an angle, and geometric microliths, which are made by leaving a portion of the sharp edge of the small blade and shaping it into a half-moon, trapezoid, or triangular shape. The other type is found in areas spanning the Mongolian Plateau, Siberia, Japan, and Alaska, and is a slender (approximately 0.5 cm wide) stone blade that can be said to have effectively utilized the unused stone chips generated by gravers, which were a type of stone blade tool, or keeled-scrapers, which were a type of stone blade tool.

*Some of the terminology that refers to "geometric microliths" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…一つはヨーロッパ,アフリカ,西アジア,インドにまたがる地域に分布する石刃技法そのものの小型化あるいは縮小化とみられる小型石刃(幅約1~1.5cm,長さ数cm以下)を利用して作る石器類である。この小石刃の側辺に抉りを入れて斜めに折り取ってできる小型彫刻刀micro‐burinsや小石刃の鋭い縁を一部に残して半月形,台形,三角形状に加工する幾何学形細石器geometric microlithと呼ばれるものである。他はモンゴル高原,シベリア,日本,アラスカにまたがる地域に分布圏をもつもので,石刃石器の一つであった彫刻刀graverあるいは舟底形石器keeled‐scraper類から生ずる不用な石屑部分を逆に有効に活用したといえる細身(幅約0.5cm)の石刃類である。…

※「幾何学形細石器」について言及している用語解説の一部を掲載しています。

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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