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Ota Formation Toyama prefecture, 1957

• Type locality: Kamiota - Uryu, Tsubata city, Kahoku county, Ishikawa prefecture
• Coherent formation
• early Miocene

• Sedimentary facies: Fluvial?
• Lithofacies: Sandstone
• Lithofacies (Upper, Minor): Siltstone, Silty mudstone
• Lithofacies (Middle, Minor): Gravel-bearing sandstone
• Lithofacies (Bottom, Minor): Conglomerate
• Sedimentary structures: Cross stratification
• Paleocurrent: to Southeast - South - Southwest

• Thickness: ca. 10 - 350 m
• Upper limit: Unconformity (Uryu Formation, Himi Formation, Hanyu Formation)
• Lower limit: Unconformity (Hodatsusan Granite, Funatsu Granitic Rocks)

• Distribution: Kamiota - Uryu - Bodaiji, Tsubata city, Kahoku county, Ishikawa pref.; Uwadana - Yochi, Kahoku city, Ishikawa pref.

• Sumi et al. (1989) Geology of the Isurugi District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 118p. (in Japanese with English abstract 5p.)
• Sumi (1978) Geology of the Tsubata District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 55p. (in Japanese with English abstract 4p.)