glacial erosion - created from Mind Map

Página 1

parte A: process glaciers form in hollows on the colder, sheltered side of a mountain these hollows are called corries

snow and ice gathers in the hollow and over time the corrie gets larger by freece-thaw weathering.

1 inside the hollow the ice begins to move in a circular motion, called rotational slip

the ice will move out of the corrie and over the lip of the hollow

the glacier moves down the mountainside

at the front of the glacier is the snout

A lake called a tarn, may form in the corrie.

the steep knife-edged ridge between two corries is called an arête

2 also loosens pieces or rocks

fall onto the glacier

are called moraine

part B: ladscapers: as a glacier glacier moves, it erodes the landscape into two ways:

1 abrasion

as the glacier erode its transpot material with it

wich helps the glacier erode and shaped the landscape

occurs when pieces of rock carried by the river ice wear away the landscape.

the material can be frozen within the glacier folund underneath it

2 plucking

occurs when melt water under a glacierfreezes on to the rock surface

as the glacier moves forward, it pulls away a large fragments of rock from the surface