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Kaneyama Formation Kato, 1956

Invalid synonym: Kanayama Group

• Type locality: Kaneyama city, Mogami county, Yamagata prefecture
• Coherent formation
• middle Miocene
• Correlation: Torakeyama Formation, Upper Aniai Formation, Oishi Formation
• Intruded by: Dolerite, Basalt, Andesite, Rhyolite

• Lithofacies (Upper, North): Mudstone
• Lithofacies (Upper, South): Acidic tuff, Lapilli tuff
• Lithofacies (Lower, North): Interbedded conglomerate and sandstone
• Lithofacies (Lower, South): Pyroxene andesite lava
• Lithofacies (Lower, South, Minor): Pyroxene andesite tuff breccia

• Thickness: ca. 550 m
• Upper limit: Transitional (Otaki Formation)
• Lower limit: Conformity, partly unconformity (Nozoki Formation)

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

• Distribution: Kaneyama city, Mogami county, Yamagata pref.
• Fossils: Shellfishes, 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.)
• Tokunaga (1958) Obanazawa, Explanatory Text of the Geological Map of Japan, Scale 1:50,000, Geological Survey of Japan, 32p. (in Japanese with English abstract 6p.)