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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
- 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.)