Page "Atlantic Ocean" Paragraph 13

The principal feature of the bathymetry ( bottom topography ) is a submarine mountain range called the Mid-Atlantic Ridge.

It extends from Iceland in the north to approximately 58 ° South latitude, reaching a maximum width of about.

A great rift valley also extends along the ridge over most of its length.

The depth of water at the apex of the ridge is less than in most places, while the bottom of the ridge is three times as deep.

Several peaks rise above the water and form islands.

The South Atlantic Ocean has an additional submarine ridge, the Walvis Ridge.