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Kobuchizawa Formation

• Coherent formation
• Pleistocene

• Lithofacies (Upper): Clay
• Lithofacies (Middle): Sands, Gravels, Interbedded tuffaceous mud and sands
• Lithofacies (Lower): Interbedded peat and andesite gravels

• Thickness: 2 m
• Lower limit: Unconformity (Nirasaki Debris Avalanche Deposit, Kobozaka Pyroclastic Rocks)

• Distribution: Kobuchizawa town, Hokuto city, Yamanashi pref.
• Fossils: Picea bicolor (Cones)

• Kawachi (1977) Geology of the Yatsugatake District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 92p. (in Japanese with English abstract 4p.)