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KW Tephra, Moriya et al., 2008

Abbr.: KW

• Type locality: Shinjo basin, Yamagata prefecture
• Tephra
• Pleistocene (2.9 Ma, FT)

• Lithofacies: Silty - pumiceous tuff
• Sedimentary structures: Parallel stratification, Cross stratification

• Thickness: 5 m or thicker
• Host: Motoaikai Formation

• Distribution: Shinjo basin, Yamagata pref.

• Moriya et al. (2008) Jour. Geol. Soc. Japan, vol.114, no.1, pp.1-15 DOI