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Omichidani Formation

• Type locality: Omichidani valley, Hakusan city, Ishikawa prefecture
• Coherent formation
• Late Cretaceous

• Lithofacies: Tuffaceous mudstone, Tuffaceous sandstone

• Lower limit: Unconformity (Akaiwa Formation)

------ Conformity, ~~~~~~ Unconformity, ~~~--- Local unconformity, '''/,, Interfingered, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown

• Distribution: Omichidani valley - Akadani river, Hakusan city, Ishikawa pref.; Sugiyama river - Tani pass, Katsuyama city, Fukui pref.
• Fossils (Omichidani flora): Cunninghamia sp.

• Sakai et al. (2019) Jour. Geol. Soc. Japan, vol.125, no.3, pp.255-260 DOI
• Sakai et al. (2018) Jour. Geol. Soc. Japan, vol.124, no.3, pp.171-189 DOI
• Kawada (1982) Geology of the Mikkamachi District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 72p. (in Japanese with English abstract 6p.)
• Nozawa et al. (1975) Geology of the Hida-Furukawa District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 79p. (in Japanese with English abstract 9p.)