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Kibe caldera

Invalid synonym: Kibe cauldron

• Type locality: southeast Mine city - northern Ube city, Yamaguchi prefecture
• Volcanic rocks
• Caldera of piecemeal type associated with trapdoor type
• Late Cretaceous (after 93.1 Ma; 84.7 Ma, K-Ar; 86.5, 85.2 Ma, FT)
• Intruded in: Akiyoshi Limestone, Ota Group, Tsunemori Formation, Suo Metamorphic Rocks, Atsu Group, Mine Group, Kanmon Group
• Intruded by: Iwagoyama Granite

• Distribution (East-West): ca. 15 km
• Distribution (South-North): ca. 7 km

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

• Distribution: southeast Mine city - northern Ube 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