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Upper

Synonym: Osarushinai Formation (Matsui and Matsuzawa, 1985), Oribeyama Formation (Matsui and Matsuzawa, 1985)

Invalid synonym: Funbe Sandstone Member

• Type locality: Tokachi plain, Hokkaido
• Coherent formation
• Pleistocene

• Sedimentary facies: Marine
• Lithofacies: Conglomerate, Sandstone, Mudstone

• Thickness: 450 m or thicker
• Upper limit: Bottom of Meto Tuff
• Upper limit: Conformity (Uppermost)
• Lower limit: Bottom of Chiyoda Tuff
• Lower limit: Conformity (Lower)

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

• Distribution: Osarushinai terrace - Makubetsu terrace, Tokachi plain, Hokkaido

• Takashimizu and Oka (2007) Jour. Geol. Soc. Japan, vol.113, Supplement, pp.65-79 DOI