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Shadai Tephra

Abbr.: Ssfa

Synonym: Shadai Pyroclastic Fall Deposit

• Volcanic rocks
• Pleistocene (60 ka)
• Contemporaneous heterotopic facies: Shadai Pyroclastic Flow Deposit

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

• Distribution: Ishikari lowland, Hokkaido
• Distribution: Hayakita-Tomioka - Hayakita-Mizuho, Abira city, Yufutsu county, Hokkaido; Horosato - Kowa, Atsuma city, Yufutsu county, Hokkaido

• Nakagawa et al. (2018) Jour. Geol. Soc. Japan, vol.124, no.7, pp.473-489 DOI