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Middle stage

• Type locality: Hokkaido
• Volcanic rocks
• Pleistocene (300 - ca. 60 ka)

• Lithofacies: Basalt, Andesite
• Lithofacies: Lava, Pyroclastic rocks

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

• Distribution: Hokkaido

• Imura et al. (2019) Jour. Geol. Soc. Japan, vol.125, no.3, pp.203-218 DOI