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Ida Tephra

• Type locality: Aobadai, Iga city, Mie prefecture
• Tephra
• Pliocene

• Lithofacies: Vitreous volcanic ash

• Thickness: 25 - 40 cm
• Host: Yono Member, Iga Member

• Distribution: Aobadai, Iga city, Mie pref.

• Kawabe et al. (1996) Geology of the Ueno District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 99p. (in Japanese with English abstract 5p.)