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Toga Tephra

• Tephra
• Pleistocene

• Lithofacies: Vitreous volcanic ash

• Thickness: 7 - 20 cm
• Host: Upper part of Osaka Group

• Distribution: Osaka pref.

• Ozaki et al. (2000) Geology of the Nara District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 162p. (in Japanese with English abstract 5p.)
• Miyachi et al. (1998) Geology of the Osaka-Tonambu District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 113p. (in Japanese with English abstract 5p.)