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Yk1 Tephra Tokuhashi and Endo, 1984

Abbr.: Yk1

• Tephra
• Pleistocene

• Lithofacies: Pumice

• Host: Yokota Formation
• Thickness: ca. 4 cm

• Distribution: Hananokidani, Sodegaura city, Chiba pref.

• Komatsubara et al. (2004) Geology of the Kisarazu District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 64p. (in Japanese with English abstract 3p.)