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Ushidaki facies Uemura, 1975
- Type locality: Fukuura - Oarakawa river, Kawauchi town, Mutsu city, Aomori prefecture
- Volcanic rocks
- Miocene
- Sedimentary facies: Marine
- Sedimentary facies (Lower): Submarine pyroclastic flow
- Sedimentary facies (Bottom): Submarine pyroclastic flow
- Lithofacies (Top): Interbedded pumiceous lapilli tuff and tuff
- Lithofacies (Upper): Dacite lava
- Lithofacies (Lower): Dacitic tuff breccia
- Lithofacies (Bottom): Accidental tuff breccia
------ Conformity, ~~~~~~ Unconformity, ~~~--- Local unconformity, '''/,, Interfingered, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown
- Distribution: Nodai, Kawauchi town, Mutsu city, Aomori pref.; Bushidomari, Mutsu city, Aomori pref.; Hotokegaura, Sai city, Shimokita county, Aomori pref.
- Uemura (1975) Geology of the Mutsukawauchi District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 39p. (in Japanese with English abstract 7p.)