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Sarabetsu Formation Watanabe, 1918

Invalid synonym: Sarapetsu Formation

• Coherent formation
• Pleistocene (1.5 Ma, FT)

• Sedimentary facies (Upper): Brackish, Fluvial
• Sedimentary facies (Lower): Shallow marine, Brackish
• Sedimentary facies: Barrier island, Lagoon, Inner bay, River
• Sedimentary facies (Upper): Lagoon, River
• Sedimentary facies (Lower): Barrier island, Lagoon
• Lithofacies: Conglomerate, Sandstone, Siltstone
• Lithofacies (Upper, Minor): Lignite, (no Shellfish fossils)
• Lithofacies (Lower, Minor): Shellfish fossils, (no Lignite)

• Upper limit: Unconformity
• Lower limit: Bottom of Conglomerate - Sandstone/Conglomerate bed
• Lower limit: Conformity (Yuchi Formation)

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

• Distribution: Soya region, Hokkaido
• Distribution: Horonobe city, Teshio county, Hokkaido
• Fossils: Shellfishes

• Ishii et al. (2008) Jour. Geol. Soc. Japan, vol.114, no.6, pp.286-299 DOI
• Ishii et al. (2007) Jour. Geol. Soc. Japan, vol.113, no.2, pp.41-52 DOI
• Niizato et al. (2007) Jour. Geol. Soc. Japan, vol.113, Supplement, pp.119-135 DOI