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Karaborigawa Formation Ueki and Sakai, 2007

• Type locality: Maekawa river, Suwa town, Higashimurayama city, Tokyo
• Coherent formation
• late Pleistocene (50 - 40 ka)
• Correlation: Musashino Terrace Deposit

• Sedimentary facies: Fluvial
• Lithofacies: Gravels

• Thickness: ca. 1 m
• Upper limit: Unconformity (Musashino Loam)
• Lower limit: Unconformity (Tokorozawa Formation, Akabane Formation, Nakadai Formation, Kumegawa Formation)

• Distribution: Maekawa river, Suwa town, Higashimurayama city, Tokyo; Yanasegawa river, Kamiyamaguchi, Tokorozawa city - Shiki city, Saitama pref.; Azumagawa river - Kitagawa river - Karaborigawa river, Saitama pref.

• Ueki and Sakai (2007) Geology of the Ome District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 189p. (in Japanese with English abstract 5p.)