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Oishigawa Volcanic Rocks Nishiki et al., 2007

• Type locality: 900 - 2,000 m above sea level of Honma river, Komi city - Oishi river, Sakuho city, Minamisaku county, Nagano prefecture
• Volcanic rocks
• early Pleistocene (1.1 - 0.8 Ma)

• Lithofacies: Basalt, Andesite, Dacite

• Eruptive volume: 45.0 km³
• Upper limit: Unconfomity (Usonokuchi Gravel Bed)

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

• Distribution: 900 - 2,000 m above sea level of Honma river, Komi city - Oishi river, Sakuho city, Minamisaku county, Nagano pref.

• Nishiki and Takahashi (2012) Jour. Geol. Soc. Japan, vol.118, no.8, pp.499-515 DOI
• Nishiki et al. (2007) Jour. Geol. Soc. Japan, vol.113, no.5, pp.193-211 DOI