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Horobetsu Formation

It had been included in Hakobuchi Group.

• Coherent formation
• Yezo forearc basin
• Late Cretaceous, Maastrichtian

• Upper limit: Unconformity (Kamikineusu Formation)

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

• Distribution: Urakawa city, Urakawa county, Hokkaido

• Tamaki et al. (2008) Jour. Geol. Soc. Japan, vol.114, no.5, pp.207-217 DOI