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Banki Lava

• Volcanic rocks
• Neogene - Pleistocene

• Lithofacies: Olivine quartz-bearing two-pyroxene andesite lava

• Upper limit: Unconformity (Kanpo Volcanic Rocks, Agatsuma Clay, Okuwa Debris Avalanche Deposit)
• Lower limit: Unconformity (Tsubakuro Lava, Ojo Formation)

• Distribution: south of Naganohara station, Naganohara city, Agatsuma county, Gunma pref.

• Ota (1957) Kusatsu, Explanatory Text of the Geological Map of Japan, Scale 1:50,000, Geological Survey of Japan, 75p. (in Japanese with English abstract 8p.)