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Jozenji Formation (Kujiraoka, 1953) Tsuchiya, 1989

Invalid synonym: Jozenji facies of Kannonji Formation, Jozenji Sand Member

• Type locality: Jozenji, Sakata city, Yamagata prefecture
• Coherent formation
• Pliocene - Pleistocene
• Correlation: Nishime Formation, Motoaikai Formation

• Lithofacies: Sands
• Lithofacies (Minor): Sandy silt, Gravels, Lignite
• Sedimentary structures: Cross stratification

• Thickness: 0 - 500 m
• Upper limit: Interfingered conformity (Tengumori Volcaniclastic Rocks), Unconformity (Owarabi Debris Avalanche Deposit, Shonai Group)
• Lower limit: Transitional, partly interfingered (Kannonji Formation), Interfingered conformity (Tengumori Volcaniclastic Rocks)

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

• Distribution: Jozenji - Sugisawa - Osawa - Oashizawa - Saburoku, Sakata city, Yamagata pref.
• Fossils: Plants
• Fossils (Shellfishes): Acila (Truncacila) nakazimai, Anadara sp., Astarte (Tridonta) borealis, Clinocardium sp., Cyclocardia ferruginea orbicularis, Glycymeris cf. nipponica, Macoma oinomikadoi, Mercenaria sp., Modiolus sp., Mya cuneiformis, Lucinoma annulata, Natica sp., Solen sp.

• Nakano and Tsuchiya (1992) Geology of the Chokaisan and Fukura District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 138p. (in Japanese with English abstract 7p.)
• Tsuchiya (1989) Geology of the Osawa District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 85p. (in Japanese with English abstract 6p.)
• Tsuchiya et al. (1984) Geology of the Tsuruoka District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 77p. (in Japanese with English abstract 5p.)
• Ikebe et al. (1979) Geology of the Sakata District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 42p. (in Japanese with English abstract 3p.)