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Zenjojiyama Formation
- Caldera fill deposit
- Volcanic rocks
- Late Cretaceous (93.1, 91.3 Ma, K-Ar)
- Lithofacies: Andesite - Dacite welded tuff, Dacitic pyroclastic rocks
- Zenjojiyama Formation (Kibe caldera)
- [ Upper ]
- ~~~~~~~~~~~~~~
- Sakurayama Intrusive Breccia
- ~~~~~~~~~~~~~~
- Shiinokibata Breccia Member
- '''''''/,,,,,,
- Inugasako Breccia Member
- '''''''/,,,,,,
- Shiroyama Rhyolitic Pyroclastic Rock Member
- '''''''/,,,,,,
- Ushiroyama Andesite Member
- ~~~~~~~~~~~~~~
- [ Lower ]
- Zenjojiyama Formation
- [ East ]
- ::::::::::::::
- Taikazan body
- ::::::::::::::
- Hirano body
- ::::::::::::::
- Zenjojiyama body
- ::::::::::::::
- Kibe body
- ::::::::::::::
- [ West ]
------ Conformity, ~~~~~~ Unconformity, ~~~--- Local unconformity, '''/,, Interfingered, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown
- Distribution: Kibe - Yamaguchi - Mount Taika, Yamaguchi pref.
- Distribution: Mine city - Ube city, Yamaguchi pref.; Mount Kurokochi, Yamaguchi city, 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
- Kishi et al. (2007) Jour. Geol. Soc. Japan, vol.113, no.9, pp.479-491 DOI