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Abrasion (geology)
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Abrasion (geology) : ウィキペディア英語版
Abrasion (geology)

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.
The intensity of abrasion depends on the hardness, concentration, velocity and mass of the moving particles.
==Abrasion in coastal erosion==
Coastal abrasion occurs as breaking waves which contain sand and larger fragments erode the shoreline or headland. This removes material resulting in undercutting and possible collapse of unsupported overhanging cliffs.

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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