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Younger Fan Deposits

Invalid synonym: Kaminagayama Formation (right bank of Toyokawa river), Ushikawa Formation (left bank of Toyokawa river)

• Coherent formation
• late Pleistocene (MIS 5 - 2)

• Sedimentary facies: Fluvial
• Sedimentary facies: Tributary alluvial fan deposit
• Paleo-river system: tributary of Toyokawa river
• Lithofacies: Gravels
• Lithofacies (Minor): Sands, Mud, Peat

• Thickness: ca. 5 m
• Lower limit: Unconformity (Onoda Formation, Older Fan Deposits, Kozakai Formation)

• Distribution: Ishimakinishikawa town - Ishimakihagihira town, Toyohashi city, Aichi pref.; Tomioka, Shinshiro city, Aichi pref.; Otowagawa river - Yamakagegawa river - Sanzogo town, Toyokawa city, Aichi pref.; Gamagori city, Aichi pref.

• Miyazaki et al. (2008) Geology of the Goyu District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 97p. (in Japanese with English abstract 3p.)