Yubetsu technique

The Yubetsu technique (湧別技法, Yūbetsu gihō) is a special technique to make microblades, proposed by Japanese scholar Yoshizaki in 1961, based on his finds in some Upper Palaeolithic sites in Hokkaido, Japan, which date from c. 13,000 bp.

The name comes from the Yūbetsu River (湧別川, Yubetsugawa), on the right bank of which 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

(Japanese)江坂輝爾, 芹沢長介, 坂詰秀一, 『新日本考古学小辞典』（2005）p416
(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

Prehistoric technology

Tools

Farming

Food processing

Hunting

Arrow Boomerang throwing stick Bow and arrow history Nets Spear Spear-thrower baton harpoon woomera Schöningen Spears

Projectile points	Arrowhead Bare Island Cascade Clovis Cresswell Cumberland Eden Folsom Lamoka Manis Site Plano Transverse arrowhead

Toolmaking

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Architecture

Ceremonial	Göbekli Tepe Kiva Standing stones megalith row Stonehenge Pyramid

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Arts and culture

Material goods	Baskets Beadwork Beds Chalcolithic Clothing/textiles timeline Cosmetics Glue Hides shoes Ötzi Jewelry amber use Mirrors Pottery Cardium Grooved ware Linear Jōmon Unstan ware Sewing needle Weaving Wine Winery wine press

Prehistoric art	Art of the Upper Paleolithic Art of the Middle Paleolithic Blombos Cave List of Stone Age art Bird stone Bradshaw rock paintings Cairn Carved Stone Balls Cave paintings painting pigment Cup and ring mark Geoglyph Golden hats Guardian stones Megalithic art Petroform Petroglyph Petrosomatoglyph Pictogram Rock art Stone carving Sculpture Statue menhir Stone circle list British Isles and Brittany Venus figurines

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