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Unit 2
- Type locality: 1,320 m above sea level, the left bank of Sannomata creek, Wada, Nagawa city, Chiisagata county, Nagano prefecture
- Volcanic rocks
- Sedimentary facies: Terrestrial
- Sedimentary facies: Block-and-ash-flow deposit
- Lithofacies (Block): Foaming perlite
- Lithofacies: Rhyolite, Obsidian
- Thickness: 3 m
- Upper limit: Unconformity
- Lower limit: Unconformity
- Sannomatazawa Pumice Flow Deposit
- [ Upper ]
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- Unit 6, Overall thickness 10 m, A flow is 0.8-4m
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- Unit 5, Overall thickness 10 m, A flow is 0.8-4m
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- Unit 4, Overall thickness 10 m, A flow is 0.8-4m
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- Unit 3, Overall thickness 10 m, A flow is 0.8-4m
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- Unit 2
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- Unit 1
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- [ Lower ]
------ Conformity, ~~~~~~ Unconformity, ~~~--- Local unconformity, '''/,, Interfingered, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown
- Distribution: 1,300 - 1,400 m above sea level, Sannomata creek, Wada, Nagawa city, Chiisagata county, Nagano pref.
- Makino et al. (2015) Jour. Geol. Soc. Japan, vol.121, no.7, pp.249-260, DOI