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Arakawa Dolerite Takarada and Muraoka, 2004

• Type locality: Arakawa river, Aomori city, Aomori prefecture
• Volcanic rocks
• Miocene
• Intruded in: Nashikizawa Tuff Member
• Correlation: Aseishigawa Basalt

• Sedimentary facies: Sills
• Lithofacies: Dolerite

• Upper limit: Unconformity (Nijikai Tuff)

• Distribution: Arakawa river, 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.)