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Koba Tephra Makinouchi, 1975

• Type locality: Koba - Hibara, Tokoname city, Aichi prefecture
• Tephra
• Pleistocene

• Lithofacies: Volcanic ash
• Sedimentary structures (Upper): Parallel stratification
• Sedimentary structures (Middle): Convolute lamination
• Sedimentary structures (Lower): Graded bedding, Parallel stratification

• Host: Tokoname Formation
• Thickness: 1 - 2.5 m
• Thickness (Upper): 50 - 150 cm
• Thickness (Middle): 0.2 - 1.5 m
• Thickness (Lower): ca. 10 cm

• Distribution: Koba - Hibara, Tokoname city, Aichi pref.
• Fossils: Plant leaves

• 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.)