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Oyama Andesite
- Volcanic rocks
- Pliocene
- Intruded by: Andesite dykes
- Distribution: Oyama, Maizuru city, Kyoto pref.; Uwase, Takahama city, Oi county, Fukui pref.
- Hirokawa and Kuroda (1958) Tangoyura, Explanatory Text of the Geological Map of Japan, Scale 1:50,000, Geological Survey of Japan, 23p. (in Japanese with English abstract 9p.)