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Ag-MzP1 Tephra (Moriya, 1968) Suzuki, 1990
Abbr.: Ag-MzP1
Invalid synonym: P1, Nireki Pumice
- Lithofacies: Volcanic ash
- Distribution: Kamiyokota town, Utsunomiya city, Tochigi pref.; Tagawa river - Kinugawa river - Kurokawa river, Utsunomiya city, Tochigi pref.; Kaminokawa city, Kawachi 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.)