Yubetsu technique
The Yubetsu technique (湧別技法, Yūbetsu gihō) is a special technique to make
Upper Palaeolithic sites in Hokkaido
, Japan, which date from c. 13,000 bp.
The name comes from the
Shirataki
(白滝遺跡, Shirataki Iseki) Palaeolithic sites were discovered.
To make microblades by this technique, a large
biface is made into a core
which looks like a tall carinated scraper. Then one lateral edge of the bifacial core is removed, producing at first a triangular spall. After, more edge removals will produce ski spalls of parallel surfaces.
This technique was also used from Mongolia to Kamchatka Peninsula during the later Pleistocene.
References
- (in Japanese)江坂輝爾, 芹沢長介, 坂詰秀一, 『新日本考古学小辞典』(2005)p416
- (in Japanese)千葉英一, 吉崎昌一, 横山英介, 「湧別技法」 『考古学ジャーナル』(1984)p229