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Ka-1 Tephra Sugiyama et al., 1987
Abbr.: Ka-1
- Tephra
- late Pleistocene
- Correlation: On-Pm1?
- Lithofacies: Volcanic ash
- Distribution: Shinsho, Makinohara city, Shizuoka pref.
- Sugiyama et al. (1988) Geology of the Omaezaki District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 153p. (in Japanese with English abstract 6p.)