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Ikumo Formation

• Volcano-plutonic complex
• Volcanic rocks
• Late Cretaceous

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

• Distribution: Yamaguchi pref.

• Aiyama and Kanaori (2019) Jour. Geol. Soc. Japan, vol.125, no.7, pp.555-570 DOI
• Imaoka et al. (2019) Jour. Geol. Soc. Japan, vol.125, no.7, pp.529-553 DOI