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Keizuruyama Lava

• Volcanic rocks
• Neogene

• Lithofacies: Augite hypersthene andesite

• Source: Mount Keizuru

• Distribution: Mount Keizuru, Katashina city, Tone county, Gunma pref. - Uonuma city, Niigata pref.

• Murayama and Kawata (1956) Hiuchi-dake, Explanatory Text of the Geological Map of Japan, Scale 1:50,000, Geological Survey of Japan, 28p. (in Japanese with English abstract 4p.)