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Mimmaya Rhyolites

• Volcanic rocks
• Pliocene
• Contemporaneous heterotopic facies: Genpachimori Formation

• Lithofacies (Upper): Rhyolitic tuff breccia
• Lithofacies (Lower): Rhyolite lava
• Lithofacies (Minor): Mudstone

• Upper limit: Unconformity (Hamana Formation), Conformity? (Masukawagawa Andesites)

• Distribution: Masukawa river, Sotogahama city, Higashitsugaru county, Aomori pref.; south of Misago island, Sotogahama city, Higashitsugaru county, Aomori pref.

• Tsushima and Uemura (1959) Kodomari, Explanatory Text of the Geological Map of Japan, Scale 1:50,000, Geological Survey of Japan, 45p. (in Japanese with English abstract 5p.)
• Ota et al. (1957) Mimmaya, Explanatory Text of the Geological Map of Japan, Scale 1:50,000, Geological Survey of Japan, 30p. (in Japanese with English abstract 5p.)