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Higher I Terrace Deposits

• Coherent formation
• middle Pleistocene

• Sedimentary facies: Terrestrial
• Lithofacies: Gravels
• Lithofacies (Minor): Sands, Silt

• Thickness: 5 - 15 m
• Upper limit: Loam
• Lower limit: Unconformity (Oyama Formation, Hirote Formation, Furuto Formation)

• Distribution: Hirote - Tanahire, Sanjo city, Niigata pref.

• Kudo et al. (2011) Geology of the Kamo District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 162p. (in Japanese with English abstract 4p.)
• Kobayashi et al. (2002) Geology of the Sanjo District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 98p. (in Japanese with English abstract 4p.)