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Kan-nongawa Debris Avalanche Deposit

Invalid synonym: Kannongawa Dry Avalanche

• Type locality: Kannon river, Minamikurano, Shimogo city, Minamiaizu county, Fukushima prefecture
• Coherent formation
• Sector collapse of Kasshiasahidake volcano
• late Pleistocene (17 ka, ¹⁴C)

• Lithofacies: Breccia
• Lithofacies (Minor): Wood fragments

• Source: western flank of Mount Kannon
• Thickness: ca. 120 m
• Running distance: 9.7 km
• Upper limit: Unconformity (Lower I Terrace Deposit)
• Lower limit: Unconformity (Middle Terrace Deposit)

• Distribution: Kannon river, Minamikurano, Shimogo city, Minamiaizu county, Fukushima pref.; Lake Kannon - Hashizaka, Shimogo city, Minamiaizu county, Fukushima pref.; Aga river, Shiono, Shimogo city, Minamiaizu county, Fukushima pref.; Kadotani river, Otokane, Shimogo city, Minamiaizu county, Fukushima pref.

• Yamamoto (1999) Geology of the Tajima District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 85p. (in Japanese with English abstract 8p.)