A link between an ice age era and a rapid polar shift
  The striking asymmetry of the ice cover during the Last Global Maximum suggests that the North Pole was in Greenland and then rapidly shifted to its present position in the Arctic See. A scenario which causes such a rapid geographic polar shift is physically possible. It involves an additional planet, which disappeared by evaporation within the Holocene. This is only possible within such a short period, if the planet was in an extremely eccentric orbit and hot. Then, since this produced an interplanetary gas cloud, the polar shift had to be preceded by a cold period with large global temperature variations during several million years. 
W. Woelfli and W. Baltensperger