Glaciers

Parts of glaciers: zone of accumulation; zone of wastage, melting, sublimation/evaporation, calving

Types of glaciers: valley glaciers (alpine glaciers), continental ice sheets

Erosion: plucking; abrasion, striations, polishing, rock flour

Transport: in the ice, on the ice, on edges/front, in meltwater

Deposition: till - poorly sorted, large grain size, angular fragments; moraines, end moraines,lateral moraines, medial moraines, ground moraines, glacial erratics; stratified drift, fine-grained, well sorted, varves

Alpine Landforms: U-shaped valleys, cirques, horns, aretes, moraines

 


Explain the mechanisms by which a glacier loses material in the zone of wastage.

Compare and contrast till and stratified drift. What is a moraine? How do ground moraines differ from the other types of moraines?

Be prepared to define and/or identify the various alpine landforms carved by glaciers.


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