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Minami-Hakkoda 3rd-stage Lava and Pyroclastic Rocks Takarada and Muraoka, 2004

Invalid synonym: Minami-Hakkoda 2nd-stage Lava

• Type locality: Mount Sarukura, Towada city, Aomori prefecture
• Pre-caldera volcanoes
• Volcanic rocks
• Pleistocene (ca. 0.5 - 0.3 Ma, K-Ar)

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

• Upper limit: Unconformity (Koganetai Lava, Hakkoda 2nd-stage Pyroclastic Flow Deposit)
• Lower limit: Unconformity (Minami-Hakkoda 2nd-stage Lava and Pyroclastic Rocks, Hakkoda 1st-stage Pyroclastic Flow Deposit)

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

• Distribution: Mount Sarukura Sarukura hot spring - Mount Norikura, Towada city, Aomori pref.; Mount Akakura, Aomori city, Aomori pref.; Okawara, Kuroishi 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.)