Glaciers are made out of fallen snow which gets accumulated for many years and gets compressed to form thick and large ice masses. Glaciers develop when snow accumulates in one specific location long for years. Glaciers are not like any other snow and can make movements. It moves like a slow-moving river. Few glaciers are covering an area as large as football fields, and there are many others which are of several kilometers long.
There are different types of glaciers that are found on this earth. Some common among them are:
• Mountain glaciers: Mountain glaciers are located in the high altitude mountainous regions.
• Valley glaciers: This glacier also originates from mountain glaciers and spill down through valleys, giving the look of giant tongues.
• Tidewater glaciers: These are also valley glaciers that can flow far distances to drop down into the water of the sea.
Other types of glaciers include Hanging glaciers, Piedmont glaciers, Cirque glaciers, Rock Glaciers, and Ice Shelves.
Glaciers take thousands of years to make changes on the surfaces of the earth. Glaciers can be defined as slow-moving rivers that start its movement from the high ranges of the mountains and later make slide downhill. It creates a curve on the land surface making valleys in U shape, sharp peaks as well as steep ridges. The surface changing the power of the glaciers increases due to the presence of rocks as well as boulders that get carried away by it. You can get the chance to see the signs of glaciations in many areas there are no more covered with ice.
The glaciers change the look of the landscape by causing erosion. When it passes over any ground, the ice causes scrapping of soil and rock. When the glacier makes the movement of the soil as well as rocks, these materials get pushed off and get accumulated on sides as the glacier passes.
A valley glacier is one form of the glacier which is capable of making a valley much deeper. It will erode the high surface with the action of abrasion and plucking.
When the ice of glaciers starts melting, the water it provides does have the power to move and make the sediment rework. This type of action is known as glacial outwash. This is how glaciers work towards changing the surface on the earth.
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