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Kanzawa Formation (Suzuki, 1932) Ito, 1985
Invalid synonym: Takadabashi Formation
- Type locality: Oshima, Midori ward, Sagamihara city, Kanagawa prefecture
- Coherent formation
- late Pliocene (Paleomagnetism)
- Sedimentary facies: Shallow marine
- Sedimentary facies (Minor): Debris flow deposit, Slump scar-fill deposit
- Lithofacies: Interbedded sands and silt
- Sedimentary structures: Parallel stratification, Slump structures, Channel structures
------ Conformity, ~~~~~~ Unconformity, ~~~--- Local unconformity, '''/,, Interfingered, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown
- Distribution: Kanzawa - Koshimizu, Oshima, Midori ward, Sagamihara city, Kanagawa pref.; Kosawa, Sumida, Aikawa city, Aiko county, Kanagawa pref.; Kamikumasaka - Sakamoto, Nakatsu, Aikawa city, Aiko county, Kanagawa pref.; Ishishima, Tanasawa - Saito, Sanda, Atsugi city, Kanagawa pref.; Koayukawa river, Iiyama, Atsugi city, Kanagawa pref.
- Fossils: Marine mammals, Mammals (Stegodon sp., Deers, Monkies), Reptiles, Fishes, Plants (Choerospondias sp., Sequoia sp.)
- Fossils (Shellfishes, Shallow marine): Cancellaria nodulifera, Dosinia (Phacosoma) japonica troscheli, Glycymeris nakamurai, Glycymeris totomiensis, Leda confusa, Mactra sulcataria, Mercenaria yokoyamai, Miltha (Lucinoma) annulata, Mitrella vorians, Natica sp., Olivella fulgurata, Solen krusensterni, Tellina nitidula, Turritella perterebra, Umbonium (Suchium) suchiense subsuchiense, Umbonium (Suchium) obsoletum arenarium, Umbonium (Suchium) obsoletum conglomeratum, Venericardia (Cyclocardia) ferruginea
- Ueki et al. (2013) Geology of the Hachioji District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 137p. (in Japanese with English abstract 6p.)
- 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.)