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Middle Haborogawa Formation

• Coherent formation
• Yezo forearc basin
• Cretaceous
• Contemporaneous heterotopic facies: Middle Kashima Formation

• Sedimentary facies: Marine
• Lithofacies: Mudstone, Sandy siltstone, Turbidite sandstone

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

• Distribution: Hokkaido

• Takashima et al. (2018) Jour. Geol. Soc. Japan, vol.124, no.6, pp.381-398 DOI