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On-Pm3 Tephra
Abbr.: On-Pm3, TtP
Invalid synonym: Pm-III, Pm-3D, Pm-3E, Pm-3F, Pm-3G
- Lithofacies: Volcanic ash, Pumice
------ Conformity, ~~~~~~ Unconformity, ~~~--- Local unconformity, '''/,, Interfingered, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown
- Distribution: Nagano pref.
- Yamada and Kobayashi (1988) Geology of the Ontakesan District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 136p. (in Japanese with English abstract 9p.)