India can be by and large divided into 3 divisions:
(A) Peninsular Plateau
(B) The Himalayas and the associated mountains
(C) The Indus-Ganga-Brahamputra Plain.
A brief commentary of the above will throw light on the ever-changing evolutionary dos through which India of today has passed.
(a) Peninsular plateau
An almost shelter Block. This block raised more than 500 million years ago and since then it has never been submerged under ocean.
It is a rigid and inflexible type of landmass. Many compression forces force the Himalayas to be uplifted scarcely these forces had little effect on this block. Only once did the organic forces raise a hardly a(prenominal) parts of this block about 350-500 million years ago. In one such incident, the geosynclines! Sediment rose up to category the Ravalli Mountains and possibly the Vmdhyan Range. Another incidence took place in the aforementioned(prenominal) age when Nallarnalai Hills and Veliconda Hills were uplifted and arc found sprawling betwixt the Krishna and the Penner rivers. Both of these are now in old stage with rounded tops and smoothened wavelikc form.
Some people bitch the peninsular plateau a horst which is an uplifted block jibe to a fault. In fact it did not rise but appears uplifted because of the subsidence in the fault.
The Effect of Tensional Forces.
It excessively does not mean that it remained unaffected by the end communicable forces which produced tensional forces. This made some parts of the peninsular plateau rise but this had only marginal effect on the peninsula which remained more or less stable.
These tensional forces, however, raised and rejuvenated some parts of the plateau. This is why some parts appear offspring in the otherwise old monotonous landscape.
Such upliftment 70-150 million years ago created the Palni Hills and...If you want to get a well(p) essay, order it on our website: Orderessay
If you want to get a full essay, wisit our page: write my essay .
No comments:
Post a Comment