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Kumakura Pumice Bed
- Volcanic rocks
- Holocene (5.0 ka)
- Eruptive volume: 106 m3 DRE
------ Conformity, ~~~~~~ Unconformity, ~~~--- Local unconformity, '''/,, Interfingered, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown
- Distribution: Kusatsu city, Agatsuma county, Gunma pref.
- Terada (2018) Jour. Geol. Soc. Japan, vol.124, no.4, pp.251-270 DOI