ICE SHEETS AND GLACIERS 



Class C 



Formations of the area of Predominant Wastage 



Types Synonyms 



Expanded Foot Ice 



Ice Tongues Afloat 



Piedmont Ice Alaskan type (Werth) 



Confluent Ice 



Avalanche Ice 



Class D 



Type Synonym 



Shelf Ice Barrier Ice 



These classes are illustrated in Figure 19. 



Conhnental ice in Antarctica is of gigantic size, 

 probably covering four million square miles. No other 

 similar example occurs, though the ice cap in Green- 

 land is of the same general form. Smaller examples 

 occur in Iceland, Norway and the Arctic Islands. 



Highland ice is defined as a comparatively thin ice 

 sheet conforming to the undulations of the land be- 

 neath. It is not common in East Antarctica, but an 

 example occurs near Cape Adare. (See Figure 19.) 



Island ice is a sheet of ice covering an island, usually 

 with a regular domed surface. They are common off 

 Queen Mary Land. 



Cirque ice may be confined to the nivation hollow 

 which has been sapped into the side of a scarp, or the 

 snowfall may increase and hence the cirque glacier may 

 spill down hill. Cirque-erosion is due primarily to 



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