QS Study

The Himalayas and other Peninsular Mountains

The Himalayas along with other peninsular mountains are young, weak, and flexible in their geological structure, unlike the rigid and stable Peninsular Block. Peninsular Block is Indian plate which was earlier part of Gondwana land/plate, which broke in geological time and broken parts of it move in the different direction as Indian plate, Australian plate, Antarctica plate, African plate etc. Consequently, they are still subjected to the interplay of exogenic and endogenic forces, resulting in the development of faults, folds, and thrust plains. These mountains are tectonic in origin, dissected by fast-flowing rivers which are in their youthful stage. Various landforms like gorges, V-shaped valleys, rapids, waterfalls, etc. are indicative of this stage.

These mountains are tectonic in origin, dissected by fast-flowing rivers which are in their youthful stage. Various landforms like gorges, V-shaped valleys, rapids, waterfalls, etc. are indicative of this stage.during the third phase of the Himalayan mountain formation approximately about 64 million years ago. Since then, it has been gradually filled by the sediments brought by the Himalayan and Peninsular rivers. An average depth of alluvial deposits in these plains ranges from 1,000-2,000 m.