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Minami-Hakkoda volcanoes (Muraoka et al, 1983)

Invalid synonym: Southern Hakkoda Volcanic Rocks

• Type locality: Okogawa creek, Nakano river, Kuroishi city, Aomori prefecture
• Pre-caldera volcanoes
• Volcanic rocks
• Pleistocene

• Lithofacies: Tholeiite series, Calc-alkaline series
• Lithofacies: Lava (more than 5 flow units)

• Thickness: ca. 100 m
• Thickness (A unit): several - tens m
• Lower limit: Unconformity (Aoni Tuff)

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

• Distribution: Daishokawa creek, Nakano river, Kuroishi city, Aomori pref.; Okawara, Kuroishi city, Aomori pref.
• Distribution: Mount Minamisawa, Mount Shimo, Mount Yoko, Mount Kushigadake, Mount Komagamine, Mount Sarukura, Mount Norikura, Mount Akakura, 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.)
• Muraoka and Hase (1990) Geology of the Kuroishi District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 124p. (in Japanese with English abstract 8p.)