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Chayano Tuff Yamada et al., 1985

Invalid synonym: Enohora Volcanic ash, Enohora Pyroclastic Flow Deposit

• Tephra
• Pliocene
• Correlation: Ebs-Fkd

• Sedimentary facies (Upper): Pyroclastic flow deposit
• Lithofacies (Upper): Dacite pumice tuff
• Lithofacies (Lower): Dacite volcanic ash-fall deposit
• Lithofacies (Lower, Minor): Accretionary lapilli

• Thickness: 8 m
• Thickness (Upper): 7 m or thicker
• Thickness (Lower): 1 - 1.5 m
• Upper limit: Unconformity (Kamitakara Pyroclastic Flow Deposit)
• Lower limit: Unconformity (Nyukawa Pyroclastic Flow Deposit)

• Distribution: Chayano - Yamaguchitanigawa river, Nyukawa town, Takayama city, Gifu pref.; Taki town, Takayama city, Gifu pref.

• Yamada et al. (1985) Geology of the Takayama District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 111p. (in Japanese with English abstract 9p.)