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Yachi Formation

• Coherent formation
• late Miocene - early Pliocene

• Lithofacies: Siltstone

• Upper limit: Unconformity (Zukawa Sandstone Member)

• Distribution: Ikarabe - Shizukudani, Takaoka city, Toyama pref.

• Amano et al. (2012) Jour. Geol. Soc. Japan, vol.118, no.12, pp.810-822 DOI