Corries Flashcards
First stage in the formation of corries
Snow builds up in a hollow high
up on the north face of
mountain sides. A year later a
small glacier forms.
Second stage in the formation of corries
The ice moves under its own
weight in a circular way called
rotational movemen
Third stage in the formation of corries
A small corrie full with ice,
flows out onto the main valley
glacier
Fourth stage in the formation of corries
The mountain top is weathered
by freeze-thaw. Persistent
freezing and melting breaks
sediment off which falls into
the ice
Fith stage in formation of corries
Erosion on the back wall is
caused by plucking. Water
freezes and pulls off rock. It
develops a vertical shaped,
jagged appearance
Sixth stage of the formations of corries
Rocks that have fallen into the
glacier ice scrape away the
floor by abrasion. A deep bowl
shape is formed
Seventh stage in a formation of a corrie
There is less erosion at the
front of the corrie as the ice is
thinner so a lip or rock bar
forms. Also moraines are
deposited here
Last stage in the formation of corries
When the ice melts a small, but
very deep lake often forms in
the hollow called a tarn