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Akakura Caldera Fill Deposit

• Coherent formation
• Valles type caldera fill deposit
• Pleistocene

• Lithofacies: Andesite lava, Hyaloclastite

• Thickness: 1,400 m or thicker
• Upper limit: Unconformity (Hitohane Formation, Nakayamadaira Caldera Fill Deposit)

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

• Distribution: Kurikoma area, Yamagara pref. - Miyagi pref.

• Otake (2007) Jour. Geol. Soc. Japan, vol.113, no.11, pp.549-564 DOI