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Atsuta Formation Matsuzawa and Kato, 1954

Invalid synonym: Dengaku Formation

• Type locality: Atsuta, Nagoya city, Aichi prefecture
• Coherent formation
• Marine transgression sediments in the last glacial period (Shimosueyoshi transgression deposit, Atsutaa transgression deposit)
• Middle terrace deposits
• Upper: Pleistocene (110 - 70 ka)
• Lower: Pleistocene (130 - 110 ka)
• Correlation: Middle Terrace Deposits
• Correlation (Upper): Hekikai Formation, Kakamigahara Terrace Deposits, Isekambe Formation
• Correlation (Lower): Koisewan Formation, Mitachi Terrace Deposits, lower Older Middle Terrace Deposits

• Sedimentary facies (Upper): Downstream fluvial
• Sedimentary facies (Upper, Minor): Brackish, Marine
• Sedimentary facies (Lower): Freshwater - Brackish - Marine - Brackish in ascending order
• Paleo-river system: Kisogawa river
• Lithofacies (Upper): Sands
• Lithofacies (Upper, Minor): Mud, Gravels
• Lithofacies (Lower): Clay, Silt
• Lithofacies (Lower, Minor): Sands, Gravels
• Lithofacies (Bottom): Sands

• Thickness: 100 m or thicker
• Thickness (Upper): 10 - 60 m or thicker
• Thickness (Lower): 10 - 40 m or thicker
• Thickness (Bottom): 10 - 20 m
• Upper limit: Unconformity (First Gravel Formation)
• Lower limit: bottom of a thick marine clay bed

------ Conformity, ~~~~~~ Unconformity, ~~~--- Local unconformity, '''/,, Interfingered, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown

• Distribution: Atsuta - Moriyama - Choboji temple, Nagoya city, Aichi pref.; Dengaku, Kasugai city, Aichi pref.; Shinooka, Komaki city, Aichi pref.; Kagamihara city, Aichi pref.Kaizu city, Gifu pref.
• Fossils: Foraminifera, Diatoms, Pollen
• Fossils (Shellfishes): Acteopyramis eximia, Bedevina birileffi, Cerithidea (Cerithideopsilla) cingulata, Cerithidea (Cerithideopsilla) djadjariensis, Moerella jedoensis, Ochetoclava kochi, Pillucina (Pillucina) pisidium, Punctoterebra (Granuliterebra) bathyraphe, Reticunassa festiva, Ringicula (Ringiculina) doliaris, Scapharca subcrenata, Solen gouldi, Veremolpa micra, Veritarca interplicata, Wallucina lamyi
• Tephra (Upper): On-Pm1, On-Pm3, , Kikai-Tozuhara tephra (K-Tz)
• Tephra (Lower): BT36, Aso-3 tephra (Aso-3)

• Makinouchi et al. (2013) Jour. Geol. Soc. Japan, vol.119, no.5, pp.335-349 DOI
• Yoshida et al. (1991) Geology of the Kuwana District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 154p. (in Japanese with English abstract 5p.)
• Sakamoto et al. (1986) Geology of the Nagoya-Nambu District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 55p. (in Japanese with English abstract 3p.)
• Sakamoto et al. (1984) Geology of the Nagoya-Hokubu District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 64p. (in Japanese with English abstract 3p.)
• Takada et al. (1979) Geology of the Tsushima District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 56p. (in Japanese with English abstract 5p.)