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Kibishimagawa Formation

• Volcanic rocks
• Late Cretaceous

• Lithofacies: Rhyolitic dacite welded tuff
• Lithofacies (Basal): Tuff
• Lithofacies (Basal, Minor): Sandstone
• Sedimentary structures: Eutaxitic structure

• Thickness: 400 - 500 m
• Thickness (Basal): ca. 50 m
• Upper limit: Conformity (Uchigatani Formation)
• Lower limit: Uncoformity (Nabi Unit, Kodaragawa Formation)

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

• Distribution: Kibishimagawa river, Hachiman town, Gujo 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.)