Glaciation

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Glaciation refers to the formation of ice on a highland.
When there is more snow falling than that which can melt, it leads to accumulation of ice on the top of a highland.
When the temperatures remain constantly below 00 (zero degrees), ice sheets known as glaciers are formed.
A glacier is a mass of moving ice.
As glaciers move, they erode the surface leaving behind glacial erosional features e.g. pyramidal peaks, hanging
valleys, corries/cirques and arêtes.
After transportation, glaciers deposit all the eroded materials leading to formation of glacial depositional features
e.g. drumlins, outwash plains, eskers, kettle holes, boulders and moraine.

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