Major Relief Features Of Ocean Floor
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The bottom surface of the ocean or known as land under the waters of the ocean floor creating the complex and varied features.
Major relief features of ocean floor. The ocean floors can be divided into four major divisions and some minor relief features. The following features are shown at example depths to scale though each feature has a considerable range at which it may occur. The ocean floor is not flat as it was believed to be in the earlier days. Together they contain the overwhelming majority of all water on the planet and have an average depth of almost 4 km about 2 5 miles.
The ocean basins are broadly divided into four major subdivisions. Ocean relief ocean relief is largely due to tectonic volcanic erosional and depositional processes and their interactions. Apart from the above mentioned major relief features of the ocean floor some minor but significant features predominate in different parts of the oceans. Ocean relief is the outcome of the great depressions of the earth s outer layer mostly on the bottom surface.
These forms are called submarine relief. Part of byju s ncert geography notes for upsc 2019. Covering nearly 40 of the ocean floor the abyssal plains are present in all major oceans and several seas of the world. The ocean floor also has high mountains deep trenches and large flat plains.
These features are formed due to the tectonic volcanic and depositional activities. This graphic shows several ocean floor features on a scale from 0 35 000 feet below sea level. The oceanic relief features are in the form of mountains basins plateaus ridges canyons and trenches beneath the ocean water. These relief features found on the ocean floor are called submarine relief.
Ocean basin any of several vast submarine regions that collectively cover nearly three quarters of earth s surface. Oceanic land forms submarine relief there are mountains basins plateaus ridges canyons and trenches beneath the ocean water too. Relief of the ocean floor. Major ocean relief features four major divisions in the ocean relief are.
A number of major features of the basins depart. They are uniquely flat with a gradient of less than 10 000. It comprises of many complex and varied relief as observed on the earth s surface. Mid oceanic ridges a mid oceanic ridge is composed of two chains of mountains separated by a large depression.
The mountain ranges can have peaks as high as 2 500 m and some even reach above. The large supply of terrigenous and shallow water sediments buries the irregular topography to form a generally flat relief.
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