With reference to residual mountain which of the following statements is are correct 1 Residual moun...........

Geography Geomorphology

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With reference to residual mountain which of the following statements is/are

correct?

1. Residual mountains are formed by general lowering of level of surfaces nearby due

to faulting.

2. Residual mountains can also be formed by the action of weathering.

3. Vindhyas and Rajmahal hills are example of residual mountains.

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1 only

1&2 only

2&3 only

All of the above

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Explanation:

Block mountains are formed by the internal earth movements. When the forces of tension
act on the rocks, they create faults in them. When the land between the two almost parallel
faults is raised above the adjoining areas, it forms a block mountain.
The weathering and different agents of erosion – rivers, winds, glaciers etc. are constantly
acting on the earth’s crust. As soon as an elevated mountain range appears on the earth’s
surface, the agents of gradation begin their work of leveling it down. To a large extent, the
process of wearing down depends on the shape and structure of the rocks.
After thousands of years, soft rocks are worn down into sand and the hard rocks are left
standing up in the area that has been reduced in height. These are called residual
mountains.
Hills like Vindhyas, the Nilgiris, the Parasnath, the Rajmahal and the Aravalis in India are
examples of residual mountains.