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Sa-9 Tephra
Abbr.: Sa-9
- Lithofacies: Andesitic pumice
- Distribution: Maeda town, Totsuka ward, Yokohama city, Kanagawa pref.
- Mitsunashi and Kikuchi (1982) Geology of the Yokohama District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 105p. (in Japanese with English abstract 4p.)