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Noborikawa Formation (Imai, 1924) Sasa, 1951

• Type locality: Noborikawa coal mine, Noborikawa, Yubari city, Hokkaido
• Coherent formation
• Paleogene

• Sedimentary facies: Fluvial
• Sedimentary facies: Meandering river, Flood plain, Channel deposit
• Lithofacies: Interbedded sandstone and mudstone, Sandstone, Siltstone, Coal
• Lithofacies (Bottom): Poorly-sorted conglomerate

• Upper limit: Conformity (Horokabetsu Formation)
• Lower limit: Unconformity (Hakobuchi Formation)

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

• Distribution: Noborikawa coal mine, Noborikawa, Yubari city, Hokkaido; Horokakuruki river, Noborikawa, Yubari city, Hokkaido

• Hoyanagi et al. (2007) Jour. Geol. Soc. Japan, vol.113, Supplement, pp.205-215 DOI
• Ando et al. (2007) Jour. Geol. Soc. Japan, vol.113, Supplement, pp.185-203 DOI