South Atlantic Ridge

The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

South Atlantic Ridge

 

the part of the Mid-Atlantic Ridge in the Atlantic Ocean that is south of the Chain Fracture Zone, near the equator. The ridge extends 10,500 km in a meridional direction. Near Bouvet Island, at about 55° S lat., the ridge is deflected in a latitudinal direction and becomes known as the African-Antarctic Ridge. The ridge is strongly dissected. Depths above the mountains range from 1,800 to 3,400 m (in the southern part). There is a series of underwater volcanoes on the slopes of the ridge. Some of the peaks form volcanic islands, including Ascension, St. Helena, Tristan da Cunha, Gough, and Bouvet.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
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