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Tochio Formation Maeda, 1958
Invalid synonym: Tochio Alternation
- Type locality: Kashiate valley, Tochio, Kamitakara town, Takayama city, Gifu prefecture
- Coherent formation
- Jurassic
- Contemporaneous heterotopic facies: Sugizaki Formation
- Sedimentary facies: Marine
- Lithofacies: Arkose sandstone
- Lithofacies (Minor): Mudstone
- Thickness: 150 m or thicker
- Upper limit: Unknown
- Lower limit: Unconformity? (Granitoids)
------ Conformity, ~~~~~~ Unconformity, ~~~--- Local unconformity, '''/,, Interfingered, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown
- Distribution: Kashiate valley - Hora valley, Tochio, Kamitakara town, Takayama city, Gifu pref.
- Fossils: Exogyrinae gen. et sp. indet, Tetoria (Tetoria) yokoyamai, Crenotrapezium kobayashii, Melanoides sp.
- Matsukawa et al. (2007) Jour. Geol. Soc. Japan, vol.113, no.8, pp.417-437 DOI