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Kubo Sand (Ikebe et al., 1951) Sakamoto, 1963

• Type locality: Yanaida, Himi city, Toyama prefecture but the outcrop was lost.
• Coherent formation
• Middle terrace deposit
• Pleistocene
• Correlation: Shimosueyoshi Formation, Fushiki Gravel Bed

• Sedimentary facies: Shallow marine
• Sedimentary facies: Wave-cut platform deposits
• Lithofacies (Upper): Sands
• Lithofacies (Upper, Minor): Mud
• Lithofacies (Middle): Gravels, Gravel-bearing sands, Sands
• Lithofacies (Lower): Sands
• Lithofacies (Lower, Minor): Gravel
• Sedimentary structures (Lower): Cross stratification
• Paleocurrent (Middle): to Northeast - North - Northwest
• Paleocurrent (Lower): to Northwest - Southwest

• Thickness: ca. 5 - 30 m
• Thickness (Upper): 5 - 10 m
• Thickness (Middle): 0.1 - 2 m
• Thickness (Lower): ca. 15 m
• Lower limit: Unconformity (Hanyu Formation, Kamitako Gravel and Clay)

• Distribution: Yanaida - Midarehashi - Sono - Oura, Himi city, Toyama pref.; Kokutaiji temple, Takaoka city, Toyama pref.
• Fossils (Shellfishes): Dosinia sp., Saccela sp., Boring shells

• Sumi et al. (1989) Geology of the Isurugi District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 118p. (in Japanese with English abstract 5p.)
• Sakamoto (1963) Toyama, Explanatory Text of the Geological Map of Japan, Scale 1:50,000, Geological Survey of Japan, 45p. (in Japanese with English abstract 6p.)