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Nagasaka Pyroclastic Flow Deposit (Fujinawa, 1980)

• Tephra
• Pleistocene (0.5? Ma)

• Lithofacies: Pyroclastic flow deposit
• Lithofacies: Augite hypersthene andesite

• Thickness: 5 m or thicker
• Upper limit: Unconformity (Dake Lava)

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

• Distribution: Natsunashi creek, Nihonmatsu 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.)