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Futa Formation Watanabe and Ono, 1969

• Coherent formation
• late Pleistocene
• Correlation: Miyuki Formation

• Upper limit: Aso-3 Pyroclastic Flow Deposits
• Upper limit: Aso-2 Pyroclastic Flow Deposits
• So-called Aso-3/2 interval deposits

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

• Distribution: Southwest flank of Aso caldera, Kumamoto pref.

• Nakazawa et al. (2018) Jour. Geol. Soc. Japan, vol.124, no.5, pp.347-359 DOI