Answer:
During glacial erosion, the rocks are slowly removed, changing the landscape of the area. The erosion that occurs due to the collision between the particles during motion is a process called abrasion. During this motion of the glaciers over the surface, it creates a series of linear marks which are commonly known as the striation marks. The presence of these marks indicates that the land surface was covered with ice in the geological past.
Thus, during the glacial erosion by abrasion, the glacier carries the rock particles and transports to a different place, producing the striation marks on the surface.
