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Glacially abraded rocks in western Norway near Jostedalsbreen glacier.

Abrasion is the mechanical scraping of a rock surface by friction between rocks and moving particles during their transport by wind, glacier, waves, gravity, running water or erosion. After friction, the moving particles dislodge loose and weak debris from the side of the rock. These particles can be dissolved in the water source.

The intensity of abrasion depends on the hardness, concentration, velocity and mass of the moving particles.

Abrasion platform

A virtually smooth marine platform is cut by the ocean waves at a coastline. If it is currently being fashioned, it will be exposed only at low tide, but there is a possibility that the wave-cut platform will be hidden sporadically by a mantle of beach shingle (the abrading agent). If the platform is permanently exposed above the high-water mark, it is probably a raised beach platform, which is not considered a product of abrasion.

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