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T1 Tephra Saito, 1956

Abbr.: T1

• Tephra
• Pliocene - early Pleistocene (2.98 Ma, FT)
• Correlation: Ykp?

• Lithofacies: Pumiceous tuff
• Sedimentary structures: Cross stratification

• Host: Sarumaru Formation
• Thickness: 0.8 - 3.5 m

• Distribution: 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.)
• Kato et al. (1989) Geology of the Omachi District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 111p. (in Japanese with English abstract 7p.)