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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.
Land and rock cannot move out of the path of a glacier, so they are subjected to glacial erosion, which is simply the carving and shaping of the land beneath a moving glacier. Glacial erosion and the interesting landforms that result from this process are the subjects of this lesson. Glacial Erosion. There are two main processes of glacial erosion. Plucking is the erosion and transport of large chunks of rocks that stick to and get picked up by the glacier. Abrasion is the erosion that occurs when particles scrape against each other. It works in a similar fashion to sandpaper.