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Tokorogawa Formation
- Coherent formation
- Pleistocene (1.45 Ma)
- Sedimentary facies: Lacustrine
- Distribution: Tokachimitsumata basin, Kamishihoro city, Kato county, Hokkaido
- Ishii et al. (2008) Jour. Geol. Soc. Japan, vol.114, no.7, pp.348-365 DOI