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- Type locality: Onagane, Hachimantai city, Iwate prefecture
- Volcanic rocks
- Pleistocene - Holocene
- Lithofacies: Andesite lava
------ Conformity, ~~~~~~ Unconformity, ~~~--- Local unconformity, '''/,, Interfingered, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown
- Distribution: Onagane - Mount Momiyama, Hachimantai city, Iwate pref.
- Kawano and Uemura (1964) Hachimantai, Explanatory Text of the Geological Map of Japan, Scale 1:50,000, Geological Survey of Japan, 36p. (in Japanese with English abstract 8p.)