'Abrasion' is mechanical scraping of a rock surface by
friction between rocks and moving particles during their transport in
wind,
glacier,
waves,
gravity or running
water.
The intensity of abrasion depends on the
hardness,
concentration,
velocity and
mass of moving particles.
Abrasion polishes rock faces.
Abrasion by a glacier
A
glacier can "carve" a valley, wearing away rocks and soil through abrasion and
plucking up and moving large pieces of rock and debris.
See also
★
Erosion