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Volcanic Fan V deposit Kano et al., 2025

Invalid synonym: Volcanic Fan 2 Deposit

• Type locality: Amidagawa river, Daisen city, Saihaku county, Tottori prefecture
• Volcanic rocks
• middle Pleistocene (Jomon transgression)

• Sedimentary facies: Debris flow deposit
• Lithofacies: Lahar deposits
• Lithofacies: Gravels
• Lithofacies (Minor): Sands
• Sedimentary structures: Parallel stratification, Wavy stratification

• Thickness: ca. 20 - 30 m
• Upper limit: Conformity (Eolian deposit intercalating KAh tephra)
• Lower limit: Unconformity (Amidagawa Pyroclastic Flow Deposit, Older Volcanic Fan Deposit, Volcanic Fan II Deposit, Volcanic Fan IV Deposit)

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

• Distribution: Amidagawa river - Sadagawa river - Shojingawa river, Daisen city, Saihaku county, Tottori pref.

• Kano et al. (2025) Geology of the Yonago District (2nd Ed.), Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 84p. (in Japanese with English abstract 4p.)
• Yamamoto (2017) Bull. Geol. Surv. Japan, vol.68, no.1, pp.1-16 DOI