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Lower Haborogawa Formation
- Coherent formation
- Yezo forearc basin
- Cretaceous
- Contemporaneous heterotopic facies: Lower Kashima Formation
- Sedimentary facies: Marine
- Lithofacies: Mudstone, Sandy siltstone
- Lithofacies (Minor): Tuffaceous sandstone (KY-5)
------ Conformity, ~~~~~~ Unconformity, ~~~--- Local unconformity, '''/,, Interfingered, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown
- Takashima et al. (2018) Jour. Geol. Soc. Japan, vol.124, no.6, pp.381-398 DOI