@article{oai:u-hyogo.repo.nii.ac.jp:00006238,
 author = {佐野, 恭平 and SANO, Kyohei},
 issue = {1},
 journal = {地域資源マネジメント研究, Journal of Regional Resource Management},
 month = {Mar},
 note = {Magnetic susceptibility is often used to identify the source of tools and tombstones that are made from igneous rocks, such as obsidian and granite. This study reports on how the relationship between magnetic susceptibility and sample thickness of obsidian contributes to identifying the source of obsidian tools. Obsidian samples from Shirataki, Hokkaido, Japan, were analyzed, focusing on those from the lava flows of Tokachi-Ishizawa (TI), Akaishiyama (AK), and Horoka-Yubetsu (HY). The sample thickness ranges from 2.74 to 20.84 mm and the magnetic susceptibility ranges from 6.1 × 10–5 to 4.2 × 10–4 SI for the TI lava, from 2.52 to 13.78 mm and 3.3 × 10–5 to 2.1 × 10–4 SI for the AK lava, and from 2.05 to 23.28 mm and from 1.9 × 10–4 to 7.3 × 10–4 SI for the HY lava, depending on the thickness of the sample wafer. The results revealed that obsidian from the HY lava demonstrated the highest value of magnetic susceptibility among the analyzed samples; thus, obsidian from the HY lava could be identified by this characteristic. Concurrently, heterogeneity in the magnetic susceptibility within a single lava flow was observed in the AK lava. These results could contribute to the identification of the source of obsidian tools and development of nondestructive techniques for measurement of magnetic susceptibility.

Key words：magnetic susceptibility, obsidian, source identification, nondestructive analysis, rock texture},
 pages = {35--43},
 title = {産地同定のための白滝産黒曜石試料の帯磁率測定},
 year = {2021},
 yomi = {サノ, キョウヘイ}
}