The St. Helena Seamount chain, also known as the St. Helena Seamounts, is an underwater chain of
seamounts in the southern
Atlantic Ocean
The Atlantic Ocean is the second-largest of the world's five oceans, with an area of about . It covers approximately 20% of Earth's surface and about 29% of its water surface area. It is known to separate the " Old World" of Africa, Europe ...
. The chain has been formed by the movement of the
African Plate
The African Plate is a major tectonic plate that includes much of the continent of Africa (except for its easternmost part) and the adjacent oceanic crust to the west and south. It is bounded by the North American Plate and South American Plate ...
over the
Saint Helena hotspot.
Plates, Plumes, and Paradigms
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References
Geography of Saint Helena
Seamount chains
Seamounts of the Atlantic Ocean
Geology of Saint Helena, Ascension and Tristan da Cunha
.
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