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Amago Intrusive Rocks Kishi et al., 2007

• Type locality: Amago, Higashiatsu town, Mine city, Yamaguchi prefecture
• Ring dike of a caldera
• Intrusive rocks
• Late Cretaceous (97.9 Ma, K-Ar; 86.7, 83.6 Ma, Rb-Sr)
• Intruded in: Akiyoshi Limestone, Ota Group, Tsunemori Formation, Suo Metamorphic Rocks, Atsu Group, Mine Group, Kanmon Group, Zenjojiyama Formation

• Lithofacies: Quartz diorite, Quartz monzogabbro
• Lithofacies (Minor): Diorite-porphyrite, Granopyre

• Distribution: Boundary between basement and Zenjoji-yama Formation

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

• Distribution: southeast Mine city - northern Ube city, Yamaguchi pref.
• Distribution: Nekore, Isa town - Amago, Higashiatsu town, Mine city, Yamaguchi pref.; Ushiroyama, Higashiatsu town, Mine city, Yamaguchi pref.; Sakurayama, Isa town, Mine city, Yamaguchi pref.

• 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