| 引用文献 |
| 1 | 大上 和良, 吉田 充（1984）北上川中流域, 胆沢扇状地における火山灰層序．岩手大工学研報，37，69-81． | Okami, K. and Yoshida, M. (1984) Tephrochronology of the Isawa fanarea, middle cource of the Kitakami river. Engineering Rep. Iwate Univ., 37, 69-81. in Japanese with English abstract. | 737 |
| 2 | 照井一明・瀬川泰宏（1994）焼石岳火山起源の村崎野軽石について．地質学雑誌，100，509-512． | Terui, K. and Segawa, Y. (1994) On the Murasakino pumice bed erupted from the Yakeishidake volcano, Iwate prefecture. J.Geol.Soc.Japan, 100, 509-512. in Japanese. | 1000 |
| 3 | 井上克弘・小沼敦（1981）北上川中流域における黒沢尻火山灰の層序・分布と強磁性鉱物の化学組成．第四紀研究，20，1-14． | Inoue, K. and Konuma, A. (1981) Stratigraphy, distribution, mineralogy and geochemistry of the Kurosawajiri volcanic ash in the middle Kitakami river basin, northeastern Japan. The Quaternary Research, 20, 1-14. in Japanese with English abstract. | 270 |
| 4 | 照井一明（1998）岩手県胆沢郡地方に分布する山形軽石の層序と供給源. 日本地質学会講演要旨集．154. | Terui, K. （1998）Stratigraphy and source of the Yamagata pumice in Isawa-gun district, Iwate Prefecture. Geological Society Meeting (abstract), 154. | 999 |