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Azuchi Welded Tuff Nishikawa et al., 1979
- Type locality: Mount Ryusekisan, Azuchi town, Omihachiman city, Shiga prefecture
- Volcanic rocks
- Cretaceous (63.1, 62.6 Ma, K-Ar)
- Sedimentary facies: Pyroclastic flow deposit
- Lithofacies (Upper): Rhyolitic dacite welded tuff
- Lithofacies (Middle): Dacite welded tuff
- Lithofacies (Lower): Pyroxene hornblende rhyolite welded tuff
------ Conformity, ~~~~~~ Unconformity, ~~~--- Local unconformity, '''/,, Interfingered, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown
- Distribution: Mount Ryusekisan - Mount Kinugasayama, Azuchi town, Omihachiman city, Shiga pref.; Choshoji - Inoko - Gokasho, Higashiomi city, Shiga pref.
- Yoshida et al. (2003) Geology of the Omi-Hachiman District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 72p. (in Japanese with English abstract 3p.)
- Ishida et al. (1984) Geology of the Hikone-Seibu District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 121p. (in Japanese with English abstract 6p.)