Glaciers (Junior Cert Geography): Flashcards

Plucking and abrasion

Ice melts, water enters cracks, refreezes, pulls rock chunks

Rocks carried by glacier grind land beneath like sandpaper

Scratches on rock from abrasion showing glacier direction

Material transported by glaciers

Ridges of debris along sides of glacier

Two glaciers meet, lateral moraines combine in centre

At glacier front, marking furthest point of advance

Glacier widens & deepens V-valley, steep sides, flat base

Smaller tributary valley left 'hanging' above main U-valley

Carrauntoohil, Co. Kerry

Boulder clay (mix of clay and stones)

Steep end from which glacier advanced

Gently sloped end showing glacier movement direction

Clew Bay, Co. Mayo - drumlins submerged by rising sea