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Kuzogawa Welded Tuff Yamada et al., 1985

• Type locality: Kuzogawa river, Aoya, Asahi town, Takayama city, Gifu prefecture
• Volcanic rocks
• Caldera
• Late Cretaceous - Paleogene (64.5 Ma, FT)
• Intruded by: Aoya Arculate Dyke, Granite porphyry dike
• Correlation: Takadaru Welded Tuff

• Sedimentary facies (Minor): Pyroclastic surge deposit?
• Lithofacies: Biotite hornblende rhyolite welded tuff
• Lithofacies (Minor): Tuff
• Sedimentary structures: Eutaxitic

• Thickness: 500 - 600 m or thicker
• Lower limit: Unconformity (Higashimata-Funayama Welded Tuff, Aoya Tuff, Onishi Formation)

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

• Distribution: Kuzogawa river - Akigamigawa river - Kabutodani valley - Mangoku - Agemi - Terasawa - Futamata, Aoya, Asahi town, Takayama city, Gifu pref.; Tokugodani valley - Toya pass, Takane town, Takayama city, Gifu pref.

• Yamada and Kobayashi (1988) Geology of the Ontakesan District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 136p. (in Japanese with English abstract 9p.)
• Kawada et al. (1988) Geology of the Hagiwara District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 82p. (in Japanese with English abstract 10p.)
• Yamada et al. (1985) Geology of the Takayama District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 111p. (in Japanese with English abstract 9p.)