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Yobito Formation Sasa and Inoue, 1939
- Type locality: around Yobito station, east coast of Lake Abashiri, Abashiri city, Hokkaido
- Coherent formation
- late Miocene (11.4 - 3.5 Ma, Diatoms, Radiolarians)
- Boundary of upper and lower parts: late Miocene (7.0 - 6.5 Ma, Diatoms)
- Contemporaneous heterotopic facies (Upper part): Notoro Formation
- Contemporaneous heterotopic facies (Lower part): Abashiri Formation
- Lithofacies: Diatomaceous mudstone
- Yobito Formation
- [ Upper ]
- ~~~~~~~~~~~~~~
- Upper part
- ~~~~~~~~~~~~~~
- Lower part
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- [ Lower ]
------ Conformity, ~~~~~~ Unconformity, ~~~--- Local unconformity, '''/,, Interfingered, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown
- Distribution: east coast of Lake Abashiri - north of Lake Notoro, Abashiri city, Hokkaido
- Fossils: Diatoms
- Motoyama et al. (2018) Jour. Geol. Soc. Japan, vol.124, no.7, pp.517-532 DOI