DEPOSITION OF DRII I 157 



is likely to be overloaded (i) just beyond a place where conditions 

 huvr favored erosion, and (2) where the ice is thinning rapidly. On 

 the whole, deposition beneath the body of a glacier back from its 



FI'R. 1 60. Glacier building an embankment. Southeast side of McCormick 

 Bay, North Greenland. 



end or edge, is much more than balanced by erosion in the same 

 position. 



At and near the end of a glacier, deposition goes on faster than 

 elsewhere, chiefly because of the rapid melting, and therefore the 

 thinning and weakening of the ice. If the end of the glacier is 

 stationary in position, drift is being brought to it continually and 



Fig. 161. Embankment completed. Near the last. (Fig. 160.) 



