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Taya Tuff Member

• Type locality: Taya - Nakada river, Nakada, Kaneyama city, Mogami county, Yamagata prefecture
• Voclanic rocks
• middle Miocene

• Lithofacies: Tuff, Lapilli tuff
• Lithofacies (Minor): Tuff breccia, Rhyolite

• Thickness: ca. 100 m
• Upper limit: Conformity (Nakada Tuff and Mudstone Member)
• Lower limit: Bottom of the intermediate volcanic rocks-bearing horizon
• Lower limit: Conformity (Ryubasan Andesites)

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

• Distribution: Taya - Nakada river, Nakada, Kaneyama city, Mogami county, Yamagata pref.

• 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.)