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Ka1 Tephra

Abbr.: Ka1

• Tephra
• Pleistocene (1.3 Ma, FT)

• Lithofacies: Vitreous tephra

• Source: Volcano of northeastern Japan?
• Host: Kakinokidai Formation
• Thickness:

• Distribution: Ozawa, Chonan city, Chosei 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.)