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KK Tephra Kanagawa prefecture, 1955
Abbr.: KK
Invalid synonym: Kk
- Lithofacies: Vitreous volcanic ash
- Distribution: Kurokawa - Kuriki, Aso ward, Kawasaki city, Kanagawa pref.; Kitahassaku, Midori ward, Yokohama city, Kanagawa pref.
- Ueki et al. (2013) Geology of the Hachioji District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 137p. (in Japanese with English abstract 6p.)
- Oka et al. (1984) Geology of the Tokyo-Seinambu District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 148p. (in Japanese with English abstract 7p.)