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Kadokai Formation

• Coherent formation
• Pliocene?

• Lithofacies: Sands, Gravels
• Lithofacies (Minor): Lignite

• Thickness: 100 - 150 m
• Upper limit: Conformity or parallel unconformity (Oshi Pyroclastic Flow Deposit), Unconformity (Agatsuma Clay, Imai Gravels, Asama-Eboshi volcanoes, Tsumagoi Pyroclastic Flow Deposit, Nittazawa Lavas)

• Distribution: Manza river, Tsumagoi 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.)