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Kuma Group (Nagai, 1957) Ochi et al., 2014

• Coherent formation
• Inland basin
• early - middle Miocene (18.4 - 16.5 Ma, FT; 16.9, 15.5 Ma, K-Ar)

• Sedimentary facies: Terrestrial, Fluvial, Lacustrine
• Sedimentary facies: Alluvial fan

• Thickness: 1,000 m or thicker
• Upper limit: Unconformity (Ishizuchi Group)
• Lower limit: Unconformity (Sanbagawa Metamorphic Rocks, Hiwadatoge Formation, Izumi Group)

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

• Distribution: Shimosakaba pass - Tomishige, Kumakogen city, Ehime pref.; Senba, Tobe city, Ehime pref.; Toon city, Ehime pref.; Inuyose pass, Iyo city, Ehime pref.

• Nakata et al. (2019) Jour. Geol. Soc. Japan, vol.125, no.6, pp.447-452 DOI
• Nara et al. (2017) Jour. Geol. Soc. Japan, vol.123, no.7, pp.471-489 DOI
• Ikeda et al. (2017) Jour. Geol. Soc. Japan, vol.123, no.7, pp.445-470 DOI
• Ochi et al. (2014) Jour. Geol. Soc. Japan, vol.120, no.5, pp.165-179 DOI