[ Top ] [ Japanese ]

Ar-TB Tephra Niigata Volcanic Ash Research Group, 1983

Abbr.: Ar-TB

• Tephra
• Pleistocene

• Lithofacies: Tuff breccia
• Lithofacies (Minor): Gravels, Sands

• Source: Torikabuto volcano?
• Host: Uonuma Formation
• Thickness: 20 m or thicker

• 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.)