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Funakubo Formation (Onuki, 1956) Kawamura et al., 2013

Invalid synonym: Orobetsu Formation, Onimaru Formation

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