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Older Fan Deposit Akahane, 1985

• Type locality: Kakuma river, Kutsuno, Yamanouchi city, Shimoakai county, Nagano prefecture
• Coherent formation
• late Pleistocene

• Sedimentary facies: Alluvial fan deposit
• Lithofacies: Sands, Gravels
• Lithofacies (Minor): Mud

• Thickness: 200 m
• Upper limit: Unconformity (Loam, Younger Fan Deposit)
• Lower limit: Unconformity (Intrusive rocks, Volcanic mudflow deposit)

• Distribution: Kakuma river, Kutsuno, Yamanouchi city, Shimoakai county, Nagano pref.; Yomase river, Kanbayashi - Yomase bridge, Yamanouchi city, Shimotakai county, Nagano pref.; Ochiai, Yamanouchi city, Shimotakai county, Nagano pref.; Matsukawa river, Okuyamada - Komaba, Takayama city, Kamitakai county, Nagano pref.; Nukatsuka, Kijimadaira city, Shimotakai county, Nagano pref.

• Akahane et al. (1992) Geology of the Nakano District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 106p. (in Japanese with English abstract 4p.)