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Uwaichi Terrace Gravels Saito, 1959

• Coherent formation
• Pleistocene
• Correlation: Nukada Terrace Gravels, Hinuma Terrace Gravels, Musashino Terrace Deposit

• Sedimentary facies: Fluvial
• Lithofacies: Gravels
• Lithofacies (Minor): Sandy silt, Sands

• Thickness: 5 - 13 m
• Lower limit: Unconformity (Tonoyama Formation)

• Distribution: Ibaraki pref.
• Fossils (Diatoms): Amphora ovalis, Cocconeis placentura var. euglypta, Cyclotella comta, Cymbella affinis, Cymbella turgida, Cymbella turgidula, Diploneis ovalis, Epithemia zebra, Eunotia sp., Gomphonema constrictum, Hanzschia sp., Melosira italica, Neidium iridis, Pinnularia borealis, Pinnularia divergens, Pinnularia gibba var. parva, Stauroneis sp., Stephanodiscus niagarae, Synedra ulna

• Sakamoto (1975) Geology of the Isohama District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 55p. (in Japanese with English abstract 4p.)
• Sakamoto et al. (1972) Geology of the Nakaminato District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 94p. (in Japanese with English abstract 5p.)