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WORK OF WIND

There are different land features on our earth due to the forces of different elements like river, ice, sea waves and wind. Wind plays an important role in formation of different land features especially in the desert or arid regions.

The landforms which are formed or curled up by the wind are called as Aeolians.

Two important factors responsible for the formation of different Aeolian landforms are:

01. Velocity: If there is high velocity in an area then it carries large amount of sediments or materials and vice versa.

02. Angular Rocks: Angular rocks are very important in erosion.

Aeolian landforms are divided into two category based on their process of formation. They are:

01. Erosional landforms

02. Depositional landforms

EROSIONAL LANDFORMS

Erosional landforms are those which are formed due to the continuous removal of sand particles or sediments.

MUSHROOM ROCK/ PEDESTALS ROCK

Mushroom rocks are also called as pedestals rock. Mushroom rocks are formed by the process of abrasion

or sand blasting in which sand particles are carried by the wind and blasted against the wall or a rock causing the erosion of a wall or a rock.

In case of mushroom rock the bottom of the rock particles are eroded faster compared to the top of the rock. It is because of the high velocity along the surface compared to the top. Even the sand particles are more along the surface. This particular structure is called as mushroom rock because it has an umbrella like structure and it resembles the mushroom structure like the upper part of the rock will be broader and narrow at the bottom. INSELBERGS

Inselbergs are formed by rising abruptly from the ground level with very steep slope and rounded top. In this kind landform

there will be existed rock and only top side of the rock particles gets eroded leading to the formation of Inselbergs.

DEMOISELLES Demoiselles are formed where we can find the presence hard rock at the top and the soft rock at the bottom. In this process of

formation the soft rock particles which are the below the hard rock are been eroded keeping the hard rock same at the top.

So, these demoiselles top are covered or capped with the hard rock.

ZEUGEN Zeugen landforms are found in the place where there is a tabular mass of the rock in which the hard rock and the soft rock are alternatively

arranged. In this kind of landforms there is less erosion in the layer where the hard rocks are found and more erosion in the layer where the

soft rocks are found. Then the Zeugen landform is created.

YARDANGS Yardang landforms are formed vertically and align to the direction of the wind. These landforms are characterised by the steep sides and

deeply underwent towards wind direction. These are very steep and over hanging.



WIND BRIDGE/ WINDOWS

Wind Bridge is formed by the abrasion process. This is formed due to the continuous erosion and pierce. At the

beginning a small hole is created in the rock. As the time runs the hole gets wider and the bridge like structure is formed.

These are the erosional landforms created on our earth due to the work of wind.