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Nishikiyama Welded Tuff Yamada et al., 1985

• Type locality: Mount Nishikiyama, Enako town, Takayama city, Gifu prefecture
• Volcanic rocks
• Caldera
• Late Cretaceous - Paleogene
• Correlation: Miyagawa Welded Tuff?
• Intruded by: Rhyolite lapilli tuff dike

• Lithofacies: Hornblende biotite rhyolite welded tuff

• Thickness: 150 - 200 m
• Distribution (South - North): ca. 8 km
• Upper limit: Unconformity (Higashimata-Funayama Welded Tuff)
• Lower limit: Abut unconformity (Arakigawa Formation), Unconformity (Kohachigagawa Formation, Dayoshi Formation)

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

• Distribution: Mount Nishikiyama, Enako town, Takayama city, Gifu pref.; Matsumoto town - Ishiura 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.)