Yatsugatake Obsidian Source

Yatsugatake Mugikusa-pass obsidian outcrop 2000m above sea level

Obsidian Sources of Pacific Islands Kozushima

Microblade-cores from Yadegawa site: Made of Kozushima obsidian
Pacific Islands Kozushima obsidian Sources	Obsidian pebbles of Pacific Islands Kozushima

Yatsugatake plateau such as obsidian, green chert, chert and quarts were available within an area less than 20km from the site. Five Microblade-cores from Yadegawa site were manufactured, however, on obsidian from Pacific Island�� Kozushima, about 200km far from Yatsugatake region.

Obsidian raw material of unknown obsidian source NK
from Nakappra1G site

Distribution of obsidian-use sites of microblade culture
in central Japan

Big mark = obsidian source
Small mark = obsidian-use site