What is the primary mechanism behind glacial abrasion?

💡 The Answer

• Glacial abrasion is driven by force, friction, vibration, and internal deformation of ice.
• The glacier slides over rocks and sediments at its base.
• Rocks picked up by the ice grind slowly against rock surfaces.
• Continuous downhill movement of snow or glacier causes scratching.
• This mechanism physically weathers the bedrock.