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Kamabuchi Formation Ozawa and Sumi, 1961
- Type locality: Shione river, Mamurogawa city - Haruki river, Kaneyama city, Mogami county, Yamagata prefecture
- Coherent formation
- Miocene
- Correlation: Funakawa Formation, Furukuchi Formation
- Intruded by: Andesite, Basalt, Dolerite
- Lithofacies: Mudstone, Sandstone, Dacite tuff, Andesite volcaniclastic rocks
------ Conformity, ~~~~~~ Unconformity, ~~~--- Local unconformity, '''/,, Interfingered, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown
- Distribution: Shione river, Mamurogawa city - Haruki river, Kaneyama city, Mogami county, Yamagata pref.
- Fossils: Shellfishes
- Ozawa and Sumi (1961) Uzenkaneyama, Explanatory Text of the Geological Map of Japan, Scale 1:50,000, Geological Survey of Japan, 66p. (in Japanese with English abstract 5p.)