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Kagoya Formation

• Coherent formation
• Upper: Island arc
• Lower: Back-arc basin volcanism
• middle Miocene

• Sedimentary facies: Marine
• Lithofacies (Upper): Interbedded pumice tuff and mudstone
• Lithofacies (Lower): Basalt
• Lithofacies (Lower): Submarine pyroclastic flow, Interbedded pumice tuff and mudstone

• Upper limit: Conformity
• Lower limit: Conformity

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

• Distribution: Hokuroku region, Akita pref.

• Yamada and Yoshida (2013) Jour. Geol. Soc. Japan, vol.119, Supplement, pp.168-179 DOI