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Tsuchiya Formation (Endo and Uesugi, 1972) Uesugi, 1976

• Type locality: Takinomae, Oi city, Ashigarakami county, Kanagawa prefecture
• Coherent formation
• Sediments by Shimosueyoshi transgression
• Pleistocene
• Correlation: Totsuka Formation, Tsurumi Formation

• Sedimentary facies (Upper): Marine
• Sedimentary facies (Middle): Marine, Terrestrial
• Sedimentary facies (Lower): Fluvial
• Sedimentary facies: Inner bay
• Water temperature: Warm ocean current
• Lithofacies: Interbedded sands and mud
• Lithofacies (Upper): Sands
• Lithofacies (Middle): Silt
• Lithofacies (Middle, Minor): Mud, Sands
• Lithofacies (Lower): Gravels

• Thickness: ca. 20 - 50 m
• Thickness (Upper): 4 m
• Thickness (Middle): 5 - 15 m
• Thickness (Lower): 2 m
• Upper limit: Unconformity (Shimosueyoshi Formation, Zengyo Gravel, Dai Gravel)
• Lower limit: Unconformity (Shichikunitoge Formation, Shichikunitoge Loam)

• Distribution: Takinomae, Oi city, Ashigarakami county, Kanagawa pref.; Totsuka ward, Yokohama city, Kanagawa pref.; Mount Iseyama, Fujisawa city, Kanagawa pref.
• Fossils (Upper, Shellfishes): Amaea magnifica, Anadara broughtonii, Anadara (Tegillarca) granosa biseensis, Babylonia japonica, Batillaria multiformis, Batillaria zonalis, Callista sinensis, Cancellaria spengleriana, Cardium (Fulvia) muticum, Clausinella cf. foliacea, Corbicula sp., Crassostrea ariakensis, Dentalium (Dentalium) octangulatum, Dosinia (Dosiniella) angulosa, Fabulina nitidula, Hinia festiva, Limopsis sp., Lutraria maxima, Macoma tokyoensis, Meretrix lusoria, Mya arenaria, Nuculana confusa, Panope japonica, Paphia cf. schenelliana, Pecten (Notovola) albicans, Polinices didyma, Raeta magnifica, Raeta cf. pellicula, Raeta pulchella, Ringicula (Ringiculella) oehlertiae, Solecurtus divaricatus, Solen krusensterni, Standella sp., Tegillarca granosa bisenensis, Terebra (Striaterebrum) lischkeana, Trapezium japonicum, Umbonium moniliferum costatum, Venericardia ferrginosa
• Fossils (Upper, Foraminifera): Bolivina cf. nobilis, Bulimina aculeata, Discorbis? spp., Elphidium advenum, Elphidium advenum var. depressula, Elphidium crispum, Elphidium aff. subglunulosum, Eponides spp., Nonion grateloupi, Planulina wuellerstorfi, Pseudononinon japonicum, Pseudononion tredecum, Quinqueloculina seminulum, Reussella cf. haizumensis, Rotalia japonica, Rotalia papillosa
• Fossils (Middle): Palaeoloxodon naumanni, Purnus cf. burgerina, Sieboldiana hosenjiana
• Fossils (Middle, Shellfishes): Dosinella penicillata, Dosinorbis (Phacosoma) japonica, Mya (Arenomya) arenaria oonogai, Tegillarca granosa bisenensis, Viviparidae

• Oka et al. (1979) Geology of the Fujisawa District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 111p. (in Japanese with English abstract 5p.)