Cordilleran Ice Sheet has a short history of a few years.
 The effect of this during deglaciation was that sea levels on the edge of the ice sheet, which naturally deglaciated first, initially rose due to an increase in the volume of water, but later fell due to rebound after deglaciation
 It is probable, though, that its northern margin also migrated south due to the influence of starvation caused by very low levels of precipitation

