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Ky Tephra Sugiyama et al., 1987

Abbr.: Ky

• Tephra
• late Pleistocene

• Lithofacies: Pumiceous volcanic ash

• Host: Kyomatsubara Sand Bed
• Thickness: 5 - 100 cm

• Distribution: Kamihiki, Omaezaki city, Shizuoka pref.

• Sugiyama et al. (1988) Geology of the Omaezaki District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 153p. (in Japanese with English abstract 6p.)