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Wkm Tephra

Abbr.: Wkm

• Type locality: Wakimoto, Oga city, Akita prefecture
• Tephra
• middle Pleistocene
• Correlation: Kasamori-5 Tephra, Oda

• Host: Shibikawa Formation

• Distribution: Anden seashore, Iriai, Oga city, Akita pref.

• Kano et al. (2011) Geology of the Toga and Funakawa District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 127p. (in Japanese with English abstract 4p.)
• Shiraishi et al. (2008) Jour. Geol. Soc. Japan, vol.114, Supplement, pp.33-50 DOI