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Ag-MzP9 Tephra (Moriya, 1968) Suzuki, 1990
Abbr.: Ag-MzP9
Invalid synonym: P9
- Lithofacies (Upper): Lapilli
- Lithofacies (Lower): Volcanic ash
- Distribution: Kurokawa river - Namekawa river - Sugatagawa river, Kanuma city, Tochigi pref.; Myojin, Nikko city, Tochigi pref.; Mibu city, Shimotsuga county, Tochigi pref.
- Ito et al. (2022) Geology of the Kiryu and Ashikaga District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 101p. (in Japanese with English abstract 4p.)
- Yoshikawa et al. (2010) Geology of the Utsunomiya District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 79p. (in Japanese with English abstract 6p.)