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Minami-Hakkoda 2nd-stage Lava and Pyroclastic Rocks Takarada and Muraoka, 2004

• Type locality: 913 m above sea level of Aoni river, Kuroishi city, Aomori prefecture
• Pre-caldera volcanoes
• Volcanic rocks
• Pleistocene (ca. 0.8 - 0.6 Ma, K-Ar)

• Lithofacies: Olivine-bearing augite hypersthene basalt - Basaltic andesite
• Lithofacies: Aa lava

• Thickness: 5 - 15 m
• Upper limit: Unconformity (Minami-Hakkoda 3rd-stage Lava and Pyroclastic Rocks, Hakkoda 1st-stage Pyroclastic Flow Deposit, Koganetai Lava, Komagamine Lava, Komagamine Pyroclastic Rocks)
• Lower limit: Unconformity (Minami-Hakkoda 1st-stage Lava and Pyroclastic Rocks, Okogawazawa Debris Flow Deposit)

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

• Distribution: Aoni river, Kuroishi city, Aomori pref.; Mount Kushigamine, Hirakawa city, Aomori pref.; Mount Shimodake - Mount Minamizawadake - Mount Yokodake, Kuroishi city, Aomori pref.; Mount Sakasagawa - Mount Akakura, Aomori city, Aomori pref.; Mount Norikura - Mount Sarukura, 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.)