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Kawabata Formation Imai, 1924

• Type locality: Yubari river, Kawabata, Yuni city, Yubari county, Hokkaido
• Coherent formation
• Foreland basins by collision between northeast Japan island arc and Kuril island arc
• middle (15 Ma) - late Miocene (Diatoms, 13.2 Ma, FT)
• Correlation: Abetsu Formation, Upper Ponsubetsu Formation, Fureoi Formation, Upper Niniu Formation

• Sedimentary facies: Marine
• Lithofacies: Turbidite
• Lithofacies (Upper): Sandstone-dominant interbedded siltstone, sandstone and conglomerate, Sandstone, Conglomerate
• Lithofacies (Lower): Siltstone-dominant interbedded siltstone, sandstone and conglomerate, Conglomerate-bearing mudstone
• Paleocurrent: North or South

• Thickness: 4,000 m or thicker
• Upper limit: Unconformity (Iwamizawa Formation)
• Lower limit: Conformity (Takinoue Formation)

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

• Distribution: Chidori fall, Takinoue, Yubari city, Hokkaido; Kamihoronai, Atsuma city, Yufutsu county, Hokkaido; Pankehorouchi river, Ashibetsu city, Hokkaido

• Kase et al., (2018) Jour. Geol. Soc. Japan, vol.124, no.8, pp.627-642 DOI
• Takeshita et al. (2018) Jour. Geol. Soc. Japan, vol.124, no.7, pp.491-515 DOI
• Takahashi et al. (2011) Jour. Geol. Soc. Japan, vol.117, no.10, pp.565-578 DOI
• Okamura et al. (2010) Jour. Geol. Soc. Japan, vol.116, no.4, pp.181-198 DOI
• Hoyanagi et al. (2007) Jour. Geol. Soc. Japan, vol.113, Supplement, pp.205-215 DOI