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Hi-TB Tephra Niigata Volcanic Ash Research Group, 1983

Abbr.: Hi-TB

• Tephra
• Pleistocene

• Sedimentary facies: Lahar deposit
• Lithofacies: Tuff breccia

• Source: Torikabuto volcano
• Host: Uonuma Formation, Tomaru Formation

• Distribution: Niigata pref.

• Takeuchi et al. (2000) Geology of the Matsunoyama Onsen District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 76p. (in Japanese with English abstract 5p.)
• Shimazu and Tateishi (1993) Geology of the Naebasan District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 90p. (in Japanese with English abstract 5p.)