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Asahi Formation
- Sedimentary facies: Marine, Products of submarine volcanoes
- Lithofacies: Rhyolitic lava, Pumice tuff, Conglomerate
- Thickness: 500 m or thicker
- Upper limit: Conformity
- Lower limit: Unconformity
------ Conformity, ~~~~~~ Unconformity, ~~~--- Local unconformity, '''/,, Interfingered, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown
- Distribution: Shimoda city, Shizuoka pref.
- Kano and Ito (2016) Jour. Geol. Soc. Japan, vol.122, no.8, pp.413-432, DOI