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Volcanic Fan I Deposit Kano et al., 2025

Invalid synonym: Volcanic Fan 5 Deposit, Takahime Formation, Mikuriya Sand and Gravel Bed

• Type locality: Hebinokawa river - Tominaganaka - Mikuriya, Daisen city, Saihaku county, Tottori prefecture
• Volcanic rocks
• middle Pleistocene (0.18 - 0.12 Ma)

• Sedimentary facies: Debris flow deposit
• Lithofacies: Gravel, Tuffaceous sands
• Lithofacies (Minor): Silt
• Sedimentary structures: Parallel stratification, Wavy stratification

• Thickness: 15 - 30 m
• Upper limit: Conformity (Eolian deposit intercalating DMP), Unconformity (Tsuruta Basalt, Iwatate Basalt)
• Lower limit: Unconformity (Older Volcanic Fan Deposit)

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

• Distribution: Hebinokawa river - Tominaganaka - Mikuriya, Daisen city, Saihaku county, Tottori pref.; Fukuichi - Kamiazuma, Yonago city, 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
• Kano and Nakano (1985) Geology of the Mihonoseki District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 28p. (in Japanese with English abstract 3p.)
• Ota (1962) Akasaki & Daisen, Explanatory Text of the Geological Map of Japan, Scale 1:50,000, Geological Survey of Japan, 37p. (in Japanese with English abstract 3p.)