Corries 🗻 Flashcards
What is a corrie’s features
An armchair shape with a steep back wall and tarn
What’s a tarn?
A lake in a corrie 💦
How can you see corrie in OS map?
Contour lines are round and steep 🗻
What is the first stage of the formation of corries
Snow gathers together in a hollow facing north and it is compressed and forms ice
What is the second stage of the formation of corries
Glacier moves downhill due to gravity, plucking rocks, freeze-thaw weathering and abrasion as it goes
What is the third stage in corrie formation
The ice melts and a tarn is formed due to water becoming trapped behind the raised rock lip. Freeze thaw occurs on the back wall causing an accumilation of scree
What is an arête?
a sharp, narrow ridge or crest of a mountain, formed by glacial erosion.
