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Yokosuka-U Tephra Yoshida and Ozaki, 1986

• Type locality: Lake Yoshidaike, Handa city, Aichi prefecture
• Tephra
• Pleistocene

• Lithofacies: Vitreous volcanic ash

• Host: Tokoname Formation
• Thickness: ca. 10 cm

• Distribution: Lake Yoshidaike, Handa city, Aichi pref.

• Yoshida and Ozaki (1986) Geology of the Handa District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 98p. (in Japanese with English abstract 4p.)