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Kawahara Formation
- Volcanic rock
- Miocene
- Intruded by: Andesite sills, Basalt sills, Traachyte sills
- Lithofacies: Andesite, Basalt, Trachyandesite tuff breccia, Tuff
- Lithofacies (Minor): Dacite? pumice tuff, Tuff, Andesite, Olivine basalt, Augite trachyte lava
------ Conformity, ~~~~~~ Unconformity, ~~~--- Local unconformity, '''/,, Interfingered, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown
- Distribution: Kawahara city - Lake Koyamaike - Ogura - Imanishi - Takafuku - Kamaguchi - Sendaigawa river - Hiketa - Tenjin - Hiketagawa river - Arata - Kamisunami - Iwatsubo, Tottori city, Tottori pref.
- Murayama et al. (1963) Tottorihokubu & Tottorinambu, Explanatory Text of the Geological Map of Japan, Scale 1:50,000, Geological Survey of Japan, 66p. (in Japanese with English abstract 8p.)