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Iw-ph5 Tephra Ito et al., 2018

Invalid synonym: PHD 3, Ojigokudani Tuff 2

• Phreatic eruption deposit
• Holocene (3.5 - 3.1 cal ka, ¹⁴C)

• Sedimentary facies: Terrestrial
• Lithofacies: Argilliceous volcanic ash

• Source: Amihari Motoyu spring
• Thickness: 35 cm

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

• Distribution: East-Iwate - Mount Ubakura - Mount Inukura, Mount Iwate, Iwate pref.

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