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Iodake Lava Nanbu and Tanida, 1961

Synonym: Iodake Lavas, Sakasatai Lava, Karesawa Lava

• Type locality: Mount Io, Aomori city - Towada city, Aomori prefecture
• Post-caldera volcanoes
• Stratovolcano
• Volcanic rocks
• Pleistocene (ca. 0.25 - 0.1 Ma; 0.19 Ma K-Ar)

• Lithofacies: Quartz olivine-bearing augite hypersthene andesite
• Lithofacies: Aa lava, Block lava

• Thickness: 100 m or thicker?
• Thickness (a sheet): 10 and several - several tens m
• Upper limit: Unconformity (Odake 1st-stage Lava, Kodake Lava, Towada-Hachinohe Pyroclastic Flow Deposit)
• Lower limit: Unconformity (Sennintai Lava and Pyroclastic Rocks, Takadaotake Lava and Pyroclastic Rocks, Itadome Formation)

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

• Distribution: Mount Io, Aomori city - Towada city, Aomori pref.

• Takarada and Muraoka (2004) Geology of the Hakkoda San District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 86p. (in Japanese with English abstract 4p.)