glaciated landforms Flashcards
when 3 corries meet ?
A pyramidal peak
the water/pool within a corrie ?
Tarn
what are the lakes at the bottom of the u shaped valley called ?
A ribbon lake and a misfit lake
what is the end of a corrie called ?
A truncated spur
what is it called when 2 corries meet ?
An arete
what is the end of an arete called ?
A hanging valley
what face of a mountain does a corrie form ?
The north face
what process steepens the back wall of a corrie ?
Plucking
what process takes place above the corrie ?
Freeze thaw weathering
what is made when freeze thaw takes place ?
Moraine (creating a deep rock basin)
what process takes place that will speed the erosional process ? (corrie)
Rotational slip
what is the difference between plucking and freeze thaw ?
freeze thaw weathering happens only above the ice while abrasion and plucking takes place bellow it.
what is a knock and lochan ?
This is a deep rock made from a Roches moutonnée (knocks) and small rivers (lochans)
how do the knocks form ?
soft and hard rock alternate between each other leading to some deep eroded holes - done by large ice sheets. leaving curved/rounded Roche moutonnée.
how do lochans form ?
this is when water fills the eroded areas - softer rock.
