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Mitsumori Andesite Muraoka and Hase, 1990

Hosono Andesite was separated from Mitsumori Andesite.

• Type locality: Nakayokomae creek, Oguni, Hirakawa city, Aomori prefecture
• Pre-caldera volcanic rocks
• Volcanic rocks
• Pliocene

• Sedimentary facies: Low alkali tholeiite
• Sedimentary facies: Lava, Sills
• Lithofacies: Andesite

• Thickness: 200 - 250 m
• Upper limit: Unconformity (Nijikai Tuff, Tazawamoriyama Formation)
• Lower limit: Unconformity (Obirakiyama Pyroclastic Flow Deposit)

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

• Distribution: Nakayokomae creek, Oguni, Hirakawa city, Aomori pref.; Mitsumori, Hirosaki city, Aomori pref.; Mount Yasute, Hirakawa city, Aomori pref.; Mount Asogatake, Hirakawa city, Aomori pref.

• 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.)