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Iw-ph1 Tephra Ito et al., 20148

Invalid synonym: PDH 1, Year 1919 Ojigokudani eruption deposit

• Phreatic eruption deposit
• Holocene (July, 1919)

• Sedimentary facies: Terrestrial
• Lithofacies: Argilliceous volcanic ash

• Source: Ojigokudani valley

------ Conformity, ~~~~~~ Unconformity, ~~~--- Local unconformity, '''/,, Interfingered, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown

• Distribution: Ojigoku valley, Mount Iwate, Iwate pref.

• Itoh et al. (2018) Jour. Geol. Soc. Japan, vol.124, no.4, pp.271-296 DOI