著者

島田 和高

出版者

日本第四紀学会

雑誌

第四紀研究 (ISSN:04182642)

巻号頁・発行日

vol.54, no.5, pp.219-234, 2015-10-01 (Released:2015-12-19)

参考文献数

68

被引用文献数

2 3

---

上部旧石器時代における中部高地産黒曜石利用に関する研究は,関東平野部など居住地での消費過程に焦点を当てることが多く,中部高地原産地における人類活動の実態と歴史的変遷については十分に議論されていない.本論は,中部高地原産地における上部旧石器集団による土地利用の歴史的変遷を復元する.そのために,以下の三種類の編年を構築ないし援用する.1)中部高地石器群の上部旧石器編年からみた石器群分布の変化,2)黒曜石産地分析のデータベースに基づく中部・関東地方全域における産地別黒曜石利用の変動,3)中部高地の古気候・古植生編年.これらの相関を比較検討した結果,36,000calBP以降の最終氷期における中部高地原産地土地利用の歴史的変遷には,気候要因により隠匿された見かけの遺跡分布や土地利用への規制が生じていることに加え,文化的・社会的な適応による土地利用の変化が認められた.

著者

島田 和高 鈴木 尚史 飯田 茂雄 杉原 重夫

出版者

明治大学

雑誌

明治大学博物館研究報告 (ISSN:13420941)

巻号頁・発行日

no.11, pp.1-28, 2006-03

---

Yadegawa sites, which have yielded many localities of microblade assemblage are located at Minamimaki village, Minami-saku county, Nagano prefecture. Microblade industries are distributed widely throughout Japan in the final stage of Late Paleolithic period. In Yadegawa sites, Yadegawa I site is a place of the first discovery that maicroblade industry exists in Japan in 1954. Afterward, Yadegawa I site was excavated twice in 1954 and 1963, and assemblages composed of microblades, microcores, scrapers and flakes and chips were recovered. Now the mass of them are garnered at Meiji University Museum. In this article, we would report a result of obsidian source analysis by using X-ray fluorescent (EDXRF). The materials are thirty-nine microcores excavated at Yadegawa I site. The analysis of EDXRF was operated at Meiji University Cultural Properties Laboratory. As a result of analysis, it proves that seventeen of microcores are identified with obsidian that came from Onbase Island, nine from Tsumetayama/Mugikusa pass, six from west Kirigamine, two from Wada pass/Takayama, one from Omekura and four were not identified. Onbase Island is situated in the Pacific at a distance of about 50km from the edge of Izu peninsula. Of course some kinds of the voyage technology might had existed for obsidian transportation from the Pacific to the main land. In addition, it has a distance of about 150km from the edge of Izu peninsula to Yadegawa sites. Other obsidian sources mentioned earlier are located at the central highlands in Nagano prefecture, the region of which is close to Yadegawa sites westward beyond Yatsugatake mountain range. It has a distance of about 20-40km. Based on these results, we attempted to do comparative studies in the technology and the form of microcores between those made from "exotic obsidian" and from "local obsidian". A category of "Ryo-chu type microcore" is applicable to them likewise. When "exotic obsidian" and "local obsidian" are compared in this context, some distinct chracteristics become apparent as follows. Whereas thick flakes are applied to microcores made from "exotic obsidian" as blanks, the numbers of microcores made from "local obsidian" were manufactured from small size of obsidian rocks directly. This represents that the differences of obsidian source bring large varieties into the technology and the form of "Ryo-chu type" microcores. In addition, this implicates the existence of a complex obsidian circulation network between areas of the mountain and the ocean in the final stage of Japanese Late Paleolithic period as well.