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Hata Formation (Mukae, 1954)

• Type locality: Hata, Kakeya town, Unnan city, Shimane prefecture
• Coherent formation
• Kakeya Caldera fill deposits
• early Miocene (26.9 - 18.4 Ma, FT; 16.9 - 14.7 Ma, K-Ar)

• Sedimentary facies: Terrestrial, Marine
• Lithofacies: Andesite lava, Dacite pyroclastic flow deposit, Volcanic debris flow deposit

• Thickness: 1,500 m or thinner
• Upper limit: Lithofacies boundary (bottom of felsic tuff)
• Upper limit: Conformity (Kawai Formation, Kuri Formation)
• Lower limit: Unconformity (Toburodani Formation)

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

• Distribution: Hata, Kakeya town, Unnan city, Shimane pref.

• Kano (2018) Jour. Geol. Soc. Japan, vol.124, no.10, pp.781-803 DOI
• Sawada et al. (2013) Jour. Geol. Soc. Japan, vol.119, no.4, pp.267-284 DOI
• Hayashi et al. (2013) Jour. Geol. Soc. Japan, vol.119, no.4, pp.300-311 DOI
• Sato et al. (2011) Jour. Geol. Soc. Japan, vol.117, no.8, pp.439-450 DOI
• Utada (2007) Jour. Geol. Soc. Japan, vol.113, no.8, pp.438-453 DOI