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Kurai Formation Akahane et al., 1992

• Type locality: Okubo, Kurai, Iizuna city, Kamiminochi county, Nagano prefecture
• Coherent formation
• Late Pleistocene

• Lithofacies (Top): Sands, Gravels
• Lithofacies: Mudflow deposit
• Lithofacies (Minor): Volcanic ash-rich silt

• Thickness: 40 - 50 m
• Upper limit: Unconformity (Hokushin Loam)
• Lower limit: Unconformity (Mure Debris Avalanche Deposit)

• Distribution: Kurai - Mure - Akashio, Iizuna city, Kamiminochi county, Nagano pref.
• Fossils: Wood fragments

• Akahane et al. (1992) Geology of the Nakano District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 106p. (in Japanese with English abstract 4p.)