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Tomyodaira Pyroclastic Rocks
- Volcanic rocks
- Pleistocene
- Lithofacies: Welded tuff, Scoriaceous agglomerate, Scoria fall deposit, Scoriaceous pyroclastic flow deposit, Pumice
------ Conformity, ~~~~~~ Unconformity, ~~~--- Local unconformity, '''/,, Interfingered, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown
- Distribution: Yukawa river - Tomyodaira - Lake Matsubara, Komi city, Minamisaku county, Nagano pref.
- Kawachi (1974) Geology of the Tateshinayama District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 114p. (in Japanese with English abstract 5p.)