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Erosion by Glaciers. Like flowing water, flowing ice erodes the land and deposits the material elsewhere. Glaciers cause erosion in two main ways: plucking and abrasion. Plucking is the process by which rocks and other sediments are picked up by a glacier. They freeze to the bottom of the glacier and are carried away by the flowing ice.
Glacial erosion can also create a roche moutonnee, which is a mass of rocks carved by a passing glacier. The rock formation has a smooth, rounded side caused by abrasion and a steep, ragged side where rocks were plucked from the surface.To unlock this lesson you must be a Study.com Member.here are two main processes of glacial erosion. The first that we will talk about is plucking, which is defined as the erosion and transport of large chunks of rocks. As a glacier moves over the landscape, water melts below the glacier and seeps into cracks within the underlying bedrock.