[ Top ] [ Japanese ]

Vp Tephra Uonuma Hills Collaborative Research Group, 1978

Abbr.: Vp

• Type locality: Tagawa river, Tokamachi city, Niigata prefecture
• Tephra
• Pleistocene

• Lithofacies (Upper): Tuffaceous siltstone
• Lithofacies (Upper, Minor): Scoria
• Lithofacies (Lower): Lignite, Lapilli, Scoria

• Host: Uonuma Formation
• Thickness: ca. 4 - 5 m

• Distribution: Tagawa river - Hanegawa river, Tokamachi city, Niigata pref.

• Yanagisawa et al. (1985) Geology of the Tokamachi District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 104p. (in Japanese with English abstract 6p.)