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Wakanabe Formation (Imai, 1924) Tashiro, 1951
- Type locality: Wakanabe creek, Shihorokabetsu river, Yubari city, Hokkaido
- Coherent formation
- Paleogene
- Sedimentary facies (Upper): Continental shelf
- Sedimentary facies (Middle): Ravinement surface
- Sedimentary facies (Lower): Estuary
- Lithofacies (Upper): Siltstone
- Lithofacies (Middle): Conglomerate, Sandstone
- Lithofacies (Lower): Interbedded sandstone and mudstone
------ Conformity, ~~~~~~ Unconformity, ~~~--- Local unconformity, '''/,, Interfingered, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown
- Distribution: Wakanabe creek, Shihorokabetsu river, Yubari city, Hokkaido; Mount Sankaku, Teimihuchi park, Yubari city, Hokkaido; Shikoro creek, Miruto, Kurisawa town, Iwamizawa city, Hokkaido
- Fossils: Ostrea
- Hoyanagi et al. (2007) Jour. Geol. Soc. Japan, vol.113, Supplement, pp.205-215 DOI