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Omanako volcano

• Volcanic rocks
• Lava dome
• Pleistocene

• Distribution: Mount Omanako, Nikko city, Tochigi pref.

• Kawata (1955) Nantaizan, Explanatory Text of the Geological Map of Japan, Scale 1:50,000, Geological Survey of Japan, 43p. (in Japanese with English abstract 7p.)