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Ub-c

• Coherent formation
• Yezo forearc basin
• Late Cretaceous

• Sedimentary facies: Marine
• Lithofacies: Interbedded sandstone and mudstone
• Sedimentary structures: Parallel stratification, Rip-up clasts

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

• Distribution: Kotanbetsu, Tomamae city, Tomamae county, Hokkaido

• Tsujino (2009) Jour. Geol. Soc. Japan, vol.115, no.3, pp.122-129 DOI