Major Relief Features Of Ocean Floor

Continental shelf 300 feet continental slope 300 10 000 feet abyssal plain 10 000 feet abyssal hill 3 000 feet up from the abyssal plain seamount 6 000 feet.

Major relief features of ocean floor. The ocean basins are broadly divided into four major subdivisions. The large supply of terrigenous and shallow water sediments buries the irregular topography to form a generally flat relief. They are uniquely flat with a gradient of less than 10 000. Ocean basin any of several vast submarine regions that collectively cover nearly three quarters of earth s surface.

These forms are called submarine relief. Ocean relief is the outcome of the great depressions of the earth s outer layer mostly on the bottom surface. The ocean floors can be divided into four major divisions and some minor relief features. 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 is not flat as it was believed to be in the earlier days. It comprises of many complex and varied relief as observed on the earth s surface. Apart from the above mentioned major relief features of the ocean floor some minor but significant features predominate in different parts of the oceans. These features are formed due to the tectonic volcanic and depositional activities.

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. Relief of the ocean floor. 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.

The mountain ranges can have peaks as high as 2 500 m and some even reach above. The following features are shown at example depths to scale though each feature has a considerable range at which it may occur. Part of byju s ncert geography notes for upsc 2019. Mid oceanic ridges a mid oceanic ridge is composed of two chains of mountains separated by a large depression.

Ocean relief ocean relief is largely due to tectonic volcanic erosional and depositional processes and their interactions. Oceanic land forms submarine relief there are mountains basins plateaus ridges canyons and trenches beneath the ocean water too. Ocean relief features are divided into major and minor relief features. This graphic shows several ocean floor features on a scale from 0 35 000 feet below sea level.

Major ocean relief features four major divisions in the ocean relief are. The ocean floor also has high mountains deep trenches and large flat plains.