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Tsubakuro Lava

• Volcanic rocks
• Neogene - Pleistocene

• Lithofacies: Two-pyroxene andesite lava
• Lithofacies (Minor): Volcaniclastic rocks

• Upper limit: Unconformity (Banki Lava)
• Lower limit: Unconformity (Kuresaka Lava)

• Distribution: south of Kawarayu hot spring - Mount Maruiwa - Sugao pass - Tsubakuro pass, 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.)