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Odaino Pyroclastic Flow Deposit Odaino, 1984

• Stratovolcano
• Old edifice
• Tephra
• Pleistocene

• Lithofacies: Non-welded pyroclastic flow deposit

• Thickness: 70 - 100 m
• Upper limit: Unconformity (Upper Odaino Lava)
• Lower limit: Unconformity (Horaisan Volcanic Rocks, Kusatsugawa Debris Avalanche Deposit)

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

• Distribution: Odaino - Lake Sugo - Nikko river, Masuda, Sakata city, Yamagata pref.

• Nakano and Tsuchiya (1992) Geology of the Chokaisan and Fukura District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 138p. (in Japanese with English abstract 7p.)