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Uchigatani Formation

• Volcanic rocks
• Late Cretaceous

• Lithofacies: Rhyolite vitreous crystalline tuff

• Thickness: 300 - 400 m
• Lower limit: Conformity (Kibishimagawa Formation), Unconformity (Samondake Unit, Nyudani Formation)

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

• Distribution: Otochi - Uchigatani valley - Uchigatani pass, Itadori, Seki city, Gifu pref.

• Wakita (1984) Geology of the Hachiman District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 89p. (in Japanese with English abstract 6p.)