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Mamurogawa Formation Ozawa and Sumi, 1961

• Type locality: Mamuro river, Mamurogawa city - Kaneyama river, Kaneyama city, Mogami county, Yamagata prefecture
• Coherent formation
• Miocene - Pliocene
• Correlation: Kitaura Formation, Wakimoto Formation, Shibikawa Formation

• Lithofacies: Sandstone, Dacite tuff
• Lithofacies (Minor): Conglomerate, Lignite

• Thickness: ca. 500 m
• Lower limit: Conformity (Kamabuchi Formation)

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

• Distribution: Mamuro river, Mamurogawa city - Kaneyama river, Kaneyama city, Mogami county, Yamagata pref.
• Fossils: Plants

• 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.)