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Oribeyama Formation
Synonym: Upper Ikeda Group (Takashimizu and Oka, 2007)
- Tokachi Group
- [ Upper ]
- ~~~~~~~~~~~~~~
- Nakazato Formation
- '''''''/,,,,,,
- Shibusan Formation
- -------~~~~~~~
- Oribeyama Formation
- '''''''/,,,,,,
- Osarushinai Formation
- -------~~~~~~~
- Ikeda Formation
- ~~~~~~~~~~~~~~
- Nukanai Formation
- ~~~~~~~~~~~~~~
- [ Lower ]
------ Conformity, ~~~~~~ Unconformity, ~~~--- Local unconformity, '''/,, Interfingered, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown
- Distribution: Tokachi plain, Hokkaido
- Takashimizu and Oka (2007) Jour. Geol. Soc. Japan, vol.113, Supplement, pp.65-79 DOI