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Toshitorazu Formation (Kubo, 1988) Ueki and Sakai, 2007

• Type locality: Minamiiriso, Sayama city, Tokyo
• Coherent formation
• late Pleistocene (15 - 14 ka)
• Correlation: Tachikawa Gravel Bed

• Sedimentary facies: Fluvial
• Lithofacies: Sands, Gravels

• Thickness: 0.5 - several m
• Upper limit: Unconformity (Tachikawa Loam)
• Lower limit: Unconformity (Tachikawa 2 Formation, Aoyagi Formation)

• Distribution: Toshitorazu river, Minamiiriso, Sayama city, Saitama pref.; Fujiyama, Komagata, Mizuho city, Nishitama county, Tokyo

• 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.)