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Gunchu Formation

• Coherent formation
• Pliocene - Pleistocene

• Sedimentary facies: Fluvial, Lacustrine
• Sedimentary facies (Upper): Alluvial fan or delta
• Sedimentary facies (Lower): Lacustrine
• Lithofacies (Upper): Conglomerate
• Lithofacies (Middle): Interbedded conglomerate and clay bed
• Lithofacies (Lower): Clay, Siltstone

• Thickness: 800 m or thicker

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

• Distribution: Morino seashore, Iyo city, Ehime pref.

• Ikeda et al. (2017) Jour. Geol. Soc. Japan, vol.123, no.7, pp.445-470 DOI