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Shimoyamasato Tuff Ishida, 1978 ex Kitamura et al., 1981

Invalid synonym: Shimoyamasato Tephra, Shimoyamazato Tuff

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