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Shirakawa Formation Yamada et al., 1971
- Type locality: Shirakawa river, Kurosawa, Agematsu city, Kiso county, Nagano prefecture
- Coherent formation
- Caldera
- Late Cretaceous - Paleogene
- Intruded by: Granite porphyry dykes
- Lithofacies: Tuffaceous mudstone, Tuffaceous sandstone, Tuff, Lapilli tuff
------ Conformity, ~~~~~~ Unconformity, ~~~--- Local unconformity, '''/,, Interfingered, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown
- Distribution: Shirakawa river, Kurosawa, Agematsu city, Kiso county, Nagano pref.; Tsuchiurazawa creek - Otakigawa river, Otaki city, Kiso county, Nagano 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.)