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Tokachigaoka Tuffaceous Sand Member

• Coherent formation
• Pleistocene

• Sedimentary facies: Marine
• Lithofacies: Reworked deposit of Kiyosumi Tuff

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

• Distribution: Osarushinai terrace - Makubetsu terrace, Tokachi plain, Hokkaido
• Tephra: Kiyosumi Tuff (1.3 Ma, FT)

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