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Issha Tephra

• Tephra
• Pliocene

• Lithofacies: Volcanic ash

• Host: Yadagawa Formation

• Distribution: Aichi pref.

• Nakashima et al. (2021) Geology of the Toyota District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 91p. (in Japanese with English abstract 4p.)