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Sori Tephra

• Type locality: Hirajima, Yokosuka town, Tokai city, Aichi prefecture
• Tephra
• Pliocene
• Correlation: Muroda Tuff, Nagakute Tephra

• Lithofacies (Upper): Volcanic ash
• Lithofacies (Lower): Vitreous volcanic ash
• Sedimentary structures: Parallel stratification, Convolute stratification

• Thickness: ca. 150 cm
• Host: Futto Formation

• Distribution: Hirajima, Yokosuka town, Tokai city, Aichi pref.; Ebata town, Obu city, Aichi pref.

• Sakamoto et al. (1986) Geology of the Nagoya-Nambu District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 55p. (in Japanese with English abstract 3p.)