[ Top ] [ Japanese ]

U12 Tephra

Abbr.: U12

• Tephra
• Pleistocene

• Lithofacies: Vitreous volcanic ash

• Host: Umegase Formation
• Thickness:

• Distribution: Kamishiki, Okita city, Isumi county, Chiba pref.

• Nanayama et al. (2016) Geology of the Mobara District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 101p. (in Japanese with English abstract 4p.)