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Ishigurekitayama Tephra Yoshida, 1989

• Type locality: Gentagawa river, Ishigure, Daian town, Inabe city, Mie prefecture
• Tephra
• Pliocene - Pleistocene

• Lithofacies: Vitreous volcanic ash
• Sedimentary structures: Graded bedding

• Host: Oizumi Formation
• Thickness: 50 cm or thicker

• Distribution: Gentagawa river, Ishigure, Daian town, Inabe city, Mie pref.; Tomotanigawa river, Taguchi, Komono city, Mie county, Mie pref.

• Yoshida et al. (1991) Geology of the Kuwana District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 154p. (in Japanese with English abstract 5p.)