Yūbetsu technique

The Yūbetsu technique ( Japanese 湧 別 技法 , Yūbetsu gihō ) is a knock-off technique for the production of microliths , which has similarities with techniques in Mongolia and which was used during the Paleolithic in Hokkaidō and northern Honshū . The Yūbetsu technique got its name in 1961 from the archaeologists Serizawa Chōsuke and Yoshizaki Masakazu , who described it based on their finds on Hokkaidō. The name Yūbetsu is derived from the site in Shirataki ( 白 滝 遺跡 , Shirataki iseki ) on the Yūbetsu River in Engaru municipality . The stone tools found here were found in and below the As-YP-Tephra layer and thus dated to 13,000 % . A distinction is made between two types of nuclei according to the sites : the Shirataki ( 白 滝 型 ) and the Sakkotsu type ( Typ 滑 型 ).

The production of microliths using the Yūbetsu technique takes place in four to five steps:

1. In preparation, first of all , circular cuts are knocked off from the core , the starting stone to be processed.
2. Then blade-like cuts are removed in the longitudinal direction so that a leaf or wedge shape is created.
3. In the third step, small triangular and trapezoidal splinters are removed from the edges of these cores, which have been machined on both sides.
4. Then parts of the core are splintered in the longitudinal direction and from this
5. Finally, micro-blades are pressed off again.

literature

• Katsuhiro Sano: Emergence and Mobility of Microblade Industries in the Japanese Islands . In: Yaroslav V. Kuzmin, Susan G. Keates, Chen Shen (Eds.): Origin and Spread of Microblade Technology in Northern Asia and North America . Archeology Press, Burnaby 2007, ISBN 978-0-86491-294-7 , chap. 5 , p. 79–90 (English, online [accessed August 30, 2013]).

annotation

1. ↑ The abbreviation As-YP is a Tephraschicht from the volcano Asama ( As ), with yellow pumice ( yellow pumice ).

Individual evidence

1. ↑ 湧 別 技法 . In: デ ジ タ ル 版 日本人 名 大 辞典 + Plus at kotobank.jp. Retrieved August 30, 2013 (Japanese). 
2. ↑ Shuichi Noshiro, Mitsuo Suzuki, Seiichiro Tsuji: Latest Pleistocene forests buried by Asama tephra in the Minami-Karuizawa basin, central Japan . In: Japanese Journal of Historical Botany . tape 13 , no. 1 , November 2004, p. 13–23 (English, Latest Pleistocene forests buried by Asama tephra in the Minami-Karuizawa basin, central Japan ( Memento from August 30, 2013 in the web archive archive.today )).
3. ↑ 白 滝 遺跡 群 Shirataki sites. 日本 旧石器 学会 (Japanese Palaeolithic Research Association), accessed August 30, 2013 (Japanese). 
4. ↑ 細 石 刃 核 （白 滝 型 と 札 滑 型） . (No longer available online.) NP オ ホ ー ツ ク ク ラ ス タ ー 湧 別 川 流域 部 会 , formerly in the original ; Retrieved August 30, 2013 (Japanese).  ( Page no longer available , search in web archives )  
5. ^ Katsuhiro Sano: Emergence and Mobility of Microblade Industries in the Japanese Islands , 2007, p. 82
6. ↑ 小 嶋 善 邦 : 連載 第 ２ 回 石 は 物語 る . Okayama Prefectural Ancient Kibi Cultural Properties Center, accessed August 30, 2013 (Japanese, with illustrations of the Yūbetsu technique in four steps).