- 独立行政法人国立高等専門学校機構 函館工業高等専門学校
- 函館工業高等専門学校紀要 (ISSN:02865491)
- vol.51, pp.31-37, 2017 (Released:2017-01-31)
At the tomb of Aonae(青苗) site which is located in Okushiri(奥尻) island of Hokkaido, the Iron sword was found together with the accessory made of Jadeite, quartz and glass. In this time, we have carried out observation of the internal structure by X-ray Image Analysis apparatus in National Institute of Technology, Hakodate College. In this paper, we report on the results and considerations about the type and age of this iron sword.