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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