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Kawaguchi Coal-bearing Member

• Coherent formation
• Pliocene (ca. 3 - ? Ma, FT)

• Sedimentary facies: Fluvial
• Lithofacies: Interbedded sandstone and mudstone
• Lithofacies (Minor): Lignite

• Upper limit: Conformity (Kanaguchi Sandstone Member)
• Lower limit: Unconformity (Yamuke Formation)

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

• Distribution: Motoaikai, Shinjo city, Yamagata pref.
• Tephra: K4 (Pyroclastic flow deposit)

• Moriya et al. (2008) Jour. Geol. Soc. Japan, vol.114, no.8, pp.389-404 DOI