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Komena Dacite

• Type locality: Komena, Ohata town, Mutsu city, Aomori prefecture
• Volcanic rocks
• Pliocene

• Lithofacies: Dacite lava, Welded tuff
• Lithofacies (Minor): Tuff

• Upper limit: Unconformity (Noheji Formation)
• Lower limit: Conformity? (Ohata Formation), Unconformity (Yagen Formation, Ikokuma Andesites)

• Distribution: Komena, Ohata town, Mutsu city, Aomori pref.

• Uemura and Saito (1957) Ohata, Explanatory Text of the Geological Map of Japan, Scale 1:50,000, Geological Survey of Japan, 31p. (in Japanese with English abstract 8p.)