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Hikage Tuff 60 Nagamori et al., 2003

Abbr.: Hkg60

• Type locality: the confluence of the Susobana river and the nigorikawa river, Kinasa, Nagano city, Nagano prefecture
• Tephra
• Pliocene (3.0 Ma, FT)

• Lithofacies (Upper): Vitreous tuff
• Lithofacies (Lower): Pumiceous tuff
• Lithofacies (Bottom): Crystalline tuff

• Host: Hikage Formation
• Thickness: ca. 230 cm
• Thickness (Lower): ca. 50 cm
• Thickness (Bottom): 10 cm or thinner

• Distribution: the confluence of the Susobana river and the nigorikawa river, Kinasa, Nagano city, Nagano pref.

• Nagamori et al. (2003) Geology of the Togakushi District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 109p. (in Japanese with English abstract 3p.)