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Odake Lava Nanbu and Tanida, 1961

• Type locality: Jogakura valley, Aomori city, Aomori prefecture
• Type locality: Mount Odake, Aomori city, Aomori prefecture
• Post-caldera volcanoes
• Volcanic rocks
• 1st-stage: Pleistocene (0.3 - 0.15 Ma; 0.3 - 0.15 Ma, K-Ar)
• 2nd-stage: Pleistocene (ca. 0.1 Ma; 0.12 - 0.09 Ma, K-Ar)
• 3rd-stage: Pleistocene (ca. 0.05 Ma; 0.04 Ma, K-Ar)

• Lithofacies (1st-stage): Quartz-bearing olivine augite hypersthene andesite
• Lithofacies (1st-stage): Block lava
• Lithofacies (2nd-stage): Olivine augite hypersthene andesite
• Lithofacies (2nd-stage): Aa lava, Block lava
• Lithofacies (3rd-stage): Olivine augite hypersthene andesite
• Lithofacies (3rd-stage): Block lava

• Thickness (1st-stage): Several tens - 30 m
• Thickness (2nd-stage): Several tens m
• Thickness (3rd-stage): 40 m or less
• Distribution (Width, 1st-stage): 200 - 500 m
• Distribution (Width, 2nd-stage): 300 - 700 m
• Distribution (Width, 3rd-stage): 150 - 800 m
• Upper limit: Unconformity (Towada-Hachinohe Pyroclastic Flow Deposit)
• Lower limit: Unconformity (Hakkoda 2nd-stage Pyroclastic Flow Deposit, Tamoyachidake Lava, Iodake Lava, Sennintai Lava and Pyroclastic Rocks, Kodake Lava)

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

• Distribution: Jogakura valley, Aomori city, Aomori pref.; Mount Odake, Aomori 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.)