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Toki Sand and Gravel Formation Akamine, 1954
Invalid synonym: Toki Sandy Gravel Formation
- Coherent formation
- Fluvio-lacustrine basin including Lake Tokai
- early Pliocene (ca. 11 - 2 Ma)
- Correlation: Mashizume Formation
- Climate: Subtropical, Warm temperate
- Lithofacies: Gravels
- Lithofacies (Minor): Silt, Sands
------ Conformity, ~~~~~~ Unconformity, ~~~--- Local unconformity, '''/,, Interfingered, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown
- Distribution: Mizunami city - Nakatsugawa city - Toki city - Ena city, Gifu pref.; Kono - Ise - Higashitawara, Minokamo city, Gifu pref.; Higashiyama, Seki city, Gifu pref.; Hongo, Tomika city, Kamo county, Gifu pref.; Kasahara town, Tajimi city, Gifu pref.; Tomioka, Inuyama city, Aichi pref.
- Fossils (Plants): Glyptostrobus pensilis, Liquidambar formosana, Metasequoia glyptostroboids, Pinus trifolia
- Tephra: Nakatsugawa I Tephra, Nakatsugawa II Tephra
- Ueki et al. (2019) Jour. Geol. Soc. Japan, vol.125, no.3, pp.227-236 DOI
- Hatano and Yoshida (2018) Jour. Geol. Soc. Japan, vol.124, no.3, pp.191-205 DOI
- Sasao et al. (2011) Jour. Geol. Soc. Japan, vol.117, no.8, pp.476-481 DOI
- Yoshida and Wakita (1999) Geology of the Gifu District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 71p. (in Japanese with English abstract 4p.)
- 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.)