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Hohoku Formation

• Coherent formation
• Cretaceous

• Lithofacies: Sandstone, Shale, Siltstone, Tuff, Conglomerate

• Thickness: 1,150 m
• Upper limit: Unconformity (Kanmon Group)

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

• Distribution: Mount Oto, Nagato city, Yamaguchi pref.; Mount Zare, Awano, Hohoku town, Shimonoseki city, Yamaguchi pref.

• Yoshida et al. (2009) Jour. Geol. Soc. Japan, vol.115, no.12, pp.643-657 DOI