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Uw-1 Kawamura and Shinohara, 2008

Abbr.: Uw-1

• Type locality: Iwaki, Nishiyamada, Uwa town, Seiyo city, Ehime prefecture
• Tephra
• early Pleistocene
• Correlation: Yellow I Tephra (Osaka Group, 1.2 Ma), Shikito Tephra (Oita Group, 1.1, 1.3 - 1.2 Ma, FT)

• Lithofacies (Upper): Clayey tuff
• Lithofacies (Lower): Glassy tuff

• Thickness: ca. 20 cm
• Host: Lowermost part of Uwa Formation

• Distribution: Iwaki, Nishiyamada, Uwa town, Seiyo city, Ehime pref.

• Kawamura and Shinohara (2008) Jour. Geol. Soc. Japan, vol.114, no.8, pp.415-425 DOI