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Ks18 Tephra

Abbr.: Ks18

• Tephra
• Pleistocene (0.62 Ma, FT; 0.58, 0.57 Ma, K-Ar)
• Correlation: Hwk, Kume Volcanic Ash (Ina Group)

• Lithofacies: Vitreous tephra

• Host: Kasamori Formation
• Thickness:

• Distribution: Kobayashi - Nagao, Mobara city, 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.)