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Upper unit

Invalid synonym: Anami Formation, Nabeyama Formation

• Coherent formation
• Kakeya Caldera fill deposits
• Miocene (14.7, 14.9, 15.0 Ma, K-Ar)

• Sedimentary facies (Bottom): Terrestrial
• Lithofacies (Main): Dacitic pyroclastic flow deposit
• Lithofacies (Minor): Andesite - dacite - rhyolite lava and pyroclastic rocks
• Lithofacies (Bottom): Mudstone

• Upper limit: Lithofacies boundary (bottom of felsic tuff)

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

• Distribution: Hata, Kakeya town, Unnan city, Shimane pref.
• Fossils: Daijima-type flora
• Fossils (Diatoms): Pinnularia brauni

• Sawada et al. (2013) Jour. Geol. Soc. Japan, vol.119, no.4, pp.267-284 DOI