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Nagayagawa Tephra Makimoto et al., 2004

• Tephra
• Pleistocene

• Lithofacies: Vitreous volcanic ash

• Thickness: ca. 50 cm
• Host: Toge Formation

• Distribution: Kokawa town, Kinokawa city, Wakayama pref.

• Makimoto et al. (2004) Geology of the Kokawa District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 89p. (in Japanese with English abstract 4p.)