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Fukizawa Formation Nakano and Tsuchiya, 1992

• Coherent formation
• Pleistocene

• Sedimentary facies: Terrestrial
• Lithofacies: Gravels, Interbedded gravels and silt
• Lithofacies (Minor): Sands

• Thickness: 40 m or thicker
• Upper limit: Unconformity (Uenodai Lava)
• Lower limit: Unconformity (Onnagawa Formation)

• Distribution: 650 - 700 m above sea level of Fukizawa creek, Nikko river, Sakata city, Yamagata pref.; 730 m above sea level of Kokurose? river, Sakata city, Yamagata pref.

• Nakano and Tsuchiya (1992) Geology of the Chokaisan and Fukura District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 138p. (in Japanese with English abstract 7p.)