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Rhyodacitic welded tuff Imaoka et al., 2019

• Type locality: Ushiroyama, Higashiatsu town, Mine city, Yamaguchi prefecture
• Caldera fill deposit
• Volcanic rocks
• Late Cretaceous

• Lithofacies: Welded tuff

• Thickness: 20 m
• Lower limit: Interfingered (Ushiroyama Andesite Member, Rhyolitic lapilli tuff)

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

• Distribution: Ushiroyama, Higashiatsu town, Mine city, Yamaguchi pref.

• Imaoka et al. (2019) Jour. Geol. Soc. Japan, vol.125, no.7, pp.529-553 DOI