| 引用文献 | 
| 1 |  | Uto, k., Takahashi, E., Nakamura, E., and  Kaneoka, I.(1994)  Geochronology  of  alkali  volcanism  in  Oki-Dogo  Island, Southwest  Japan: Geochemical  evolution  of  basalts  reltaed  to  the  opening  of  the  Japan  Sea. Geochemical  Journal,28,431-449. | 46 | 
| 2 | 鹿野 和彦, 中野 俊  (1985) 山陰地方新第三系の放射年代と対比について.地質調月 ,36,427-438. | Kano, K. and Nakano, S. (1985) Stratigraphic correlation of the Neogene in the San-in district, Southwest Japan, in the light of radiometric daring. Bull. Geol. Surv. Japan, 36, 427-438.  (in Japanese with English abstract) | 380 | 
| 3 | 徐 紅, 吉田 武義, 青木 謙一郎 (1987) 隠岐島後に産するアルカリ火山岩類の地球化学的研究. 核理研研究報告(東北大学理学部), 20, 179-201. |  | 882 |