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Minakami Group

• Volcanic rocks
• Miocene

• Lithofacies: Rhyolite tuff breccia, Tuff

• Lower limit: Unconformity (Serpentinite)

• Distribution: Higashikurosawa creek - Takara river, Minakami city, Tone county, Gunma pref.

• Chihara et al. (1981) Geology of the Echigo-Yuzawa District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 108p. (in Japanese with English abstract 8p.)