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Satsunai Formation
- Coherent formation
- Pleistocene
- Sedimentary facies: Marine
------ Conformity, ~~~~~~ Unconformity, ~~~--- Local unconformity, '''/,, Interfingered, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown
- Distribution: Osarushinai terrace - Makubetsu terrace, Tokachi plain, Hokkaido
- Tephra: Satsunai Tuff (1.5 Ma, K-Ar)
- Takashimizu and Oka (2007) Jour. Geol. Soc. Japan, vol.113, Supplement, pp.65-79 DOI