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AK-1 Tephra

• Magmatic eruption deposit
• Holocene (AD 345 - 537, ¹⁴C)

• Sedimentary facies: Terrestrial
• Lithofacies: Volcanic ash

• Source: Mount Akita-Komagatake

• Distribution: Mount Iwate, Iwate pref.

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