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Choshigataki Pyroclastic Flow Deposit Fujinawa, 1980

• Tephra
• Pleistocene

• Sedimentary facies: Block-and-ash-flow deposit
• Lithofacies: Pyroclastic flow deposit (A flow unit)
• Lithofacies: Augite hypersthene andesite

• Thickness: 8 m or thicker
• Upper limit: Unconformity (Choshigataki Lava)
• Lower limit: Unconformity (Numajiri Pyroclastic Flow Deposit)

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

• Distribution: Choshigataki fall, Ishimushiro river, Koriyama city, Fukushima pref.

• Hasegawa et al. (2011) Jour. Geol. Soc. Japan, vol.117, Supplement, pp.33-48 DOI
• Sakaguchi (1995) Geology of the Nihonmatsu District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 79p. (in Japanese with English abstract 4p.)