Once our earth almost fully was covered with ice. We all know that time as the ‘Ice age’. Pleistocene Epoch is typically defined as the age of Ice, which began about 2.6 million years ago and lasted until about 11,700 years ago.
The remains of a glacier of ice age still can be seen in some areas of the world including Greenland, Alaska, and Antarctica.
But these glaciers did not just sit there and stand in one place. There was a lot of movement over time, again and again, which continue till today. These movements of glacier-formed so many new landforms.
I already discussed glacial erosional landform, which is formed due to the erosional process of a glacier.
Now, here in this post, I am going to discuss the landforms which are formed by the depositional process of the glacier, known as a glacial depositional landform.
It is an important depositional feature or landform of Glacier.
It is formed when glacier starts melting and starts leaving and depositing its all carried debris on its way. Basically moraines are formed from debris previously carried along with a glacier, consists of loose sediments and rock debris and deposited on the surface, these materials also known as till.
Till may consist of rounded particles ranging in size from minute sand particles or glacial flour to large boulders (15-20 meter large).
Moraines can be classified into five types. These are :
It is an oval-shaped hill or an elongated hill of inverted spoon-shaped depositional glacial landform, which is formed by glacial ice action on underlying unconsolidated till or ground moraine.
Clusters of drumlin create a landscape that often looks like a half-buried egg that is why it also named Basket of Eggs Topography.
For Example, commonly found in North Ireland, USA, and Finland.
These are long narrow, widening (to the role) or mound of sand, gravel, and boulders deposited by subglacial meltwater stream.
The height of these Esker varies from 5-50 meter and length from 20-25 kilometers and more.
These look like a natural embankment.
For example, found in the U.S.A., Canada, Ireland, Sweden.
It is an irregular mound-shaped hill which is composed of till gravel, and sand that can be observed after the retreat of the glacier. It formed a delta-like landform of the glacier.
It is a depression or hole in an outwash plain formed by retreating glacier or draining floodwater.
These are formed as a result of blocks of dead ice left behind by retreating glaciers, which later surrounded by sediments, deposited by meltwater streams of the glacier.
For example, found in Preyries of U.S.A., North America.
It is also named as Sandur.
It looks like plains of glacier found at the front of the glacier and where material like sediments are deposited over a wide area, carried by glacier meltwater.
So, these are some glacial depositional landform which is formed due to the depositional process of glaciers, over a long period of time.
This way glaciers also contribute themselves in shaping the Earth's crust, as we seeing it today.
I saw glaciers only in videos and photos but not so lucky to feel and saw its mesmerizing beauty in reality, except seeing snowfall and snow, which found only in the winter season.
If you are lucky enough and visited or had any beautiful encounter with these landforms than share here, to inspire us. Write to me about what you like the most about it and why. Also write what is that thing or inspiration, which takes you into the lap of these glaciers?