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The lithosphere (crust and upper mantle) has two broad relief features — continents and ocean basins, which are created by the movement of plates along plate-tectonic boundaries, and consequential volcanic and depositional processes. The relief features of continents may be seen to consist of active mountain making belts (narrow zones along the margins of lithospheric plates, like the Alps and Himalayas) and inactive regions of old, stable rock (continental shields and mountain roots).
Oceans have a more diverse relief than the continents. Much of the oceanic crust is less than 60 million years old, while the great bulk of the continental crust is over 1 billion years old. The floors of the oceans are rugged with the world’s largest mountain ranges, deepest trenches and largest plains. It is classified into major and minor relief features. Continental shelf, continental slope, oceanic deeps and deep sea plain are major while hills, sea mounts, guyots, trenches and canyons are minor.
Formation of main relief features of the Ocean and their significance
By: ABHISHEK KUMAR GARG ProfileResourcesReport error
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