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Which islands rise above sea level along the Mid-Atlantic Ridge?
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oceanic ridge
Major features of the ocean basins.
The Mid-Atlantic Ridge is a vast submarine mountain chain that generally remains submerged; however, in certain locations, its peaks rise above sea level to form islands or island groups.
The islands that rise above sea level along the Mid-Atlantic Ridge include:
- Iceland12
- Azores32
- Ascension32
- St. Helena32
- Tristan da Cunha32
- Bouvet2
- Gough2
These are considered purely oceanic islands, as they are formed by volcanic action and lack a foundation of continental rock. Iceland is particularly notable for preserving a unique record of an accreting plate boundary, as the ridge extends directly through the center of the island.21