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Yumoriyama-Kanayama Welded Tuff Mizutani and Koido, 1992

Invalid synonym: Yumoriyama Welded Tuff, Kanayama Welded Tuff

• Type locality (Yumoriyama Welded Tuff): Tsukechigawa river - Mount Yumoriyama, Kashimo, Nakatsugawa city, Gifu prefecture
• Type locality (Kanayama Welded Tuff): Samigawa river, Shirakawa city, Kamo county, Gifu prefecture
• Volcanic rocks
• Caldera
• Late Cretaceous - Paleogene
• Intruded by: Shimoyui Granodiorite Porphyry, Dokyo Granodiorite Porphyry, Tajima Vent-fill Breccia, Hornblende porphyry

• Lithofacies: Rhyolitic dacite welded tuff
• Lithofacies (Minor): Breccia, Tuff

• Thickness: ca. 100 - 550 m
• Distribution (East - West): ca. 40 km
• Distribution (South - North): ca. 30 km
• Upper limit: Unconformity (Atera Formation, Eboshi Volcanic Rocks)
• Lower limit: Conformity (Akaishi Welded Tuff), Unconformity (Ako Welded Tuff, Higashimata-Funayama Welded Tuff, Mino Belt, Kawamata Tonalite)

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

• Distribution: Tsukechigawa river - Mount Yumoriyama, Kashimo, Nakatsugawa city, Gifu pref.; Shirakawa city - Higashishirakawa city, Kamo county, Gifu pref.; Wakatochidani valley - Kayamadani valley, Osaka town, Gero city, Gifu pref.; Dokyogawa river - Yoshidagawa river, Gujo city, Gifu pref.; Mount Hachioyama - Hidagawa river - Osaka town, Gero city, Gifu pref.; Nakatsuhara - Mount Mimuneyama, Kanayama town, Gero city, Gifu pref.; Kuzumaki - Shimodaira - Shimoyui, Shirakawa town, Kamo county, Gifu pref.

• Wakita and Koido (1994) Geology of the Gero District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 79p. (in Japanese with English abstract 5p.)
• Mizutani and Koido (1992) Geology of the Kanayama District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 111p. (in Japanese with English abstract 9p.)
• 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.)