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Kisodani Formation

• Coherent formation
• late Pleistocene
• Correlation (Upper): Takigoshi Formation

• Sedimentary facies: Fluvial
• Sedimentary facies: Debris flow deposit
• Paleo-river system: Kisogawa river
• Lithofacies: Gravels, Sands

• Thickness: 50 m or thicker

• Distribution: Kisogawa river, Kiso city, Kiso county, Nagano pref.
• Tephra: Pm-II, Pm-III'

• Takeuchi et al. (1998) Geology of the Kiso-Fukushima District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 94p. (in Japanese with English abstract 4p.)
• Yamada and Kobayashi (1988) Geology of the Ontakesan District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 136p. (in Japanese with English abstract 9p.)