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Oyama Andesite

• Volcanic rocks
• Pliocene
• Intruded by: Andesite dikes

• Lithofacies: Andesite

• Lower limit: Unconformity (Uchiura Group)

• 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.)