Tropic Seamount is a Cretaceous[a] seamount, part of the Canary Islands Seamount Province. It is located west of the Western Sahara's coastline and southwest of the Canary Islands, north of Cape Verde. It is one of a number of seamounts (a type of underwater volcanic mountain) in this part of the Atlantic Ocean, probably formed by volcanic processes triggered by the proximity to the African continent. Tropic Seamount is located at a depth of 970 metres (3,180 ft) and has a summit platform with an area of 120 square kilometres (46 sq mi).
Tropic Seamount is formed by volcanic rocks including basalt and trachyte and was probably an island at first; for reasons unknown it sank to its present-day depth. Large landslides and late volcanic activity affected the seamount, cutting large scars into its flanks and forming cones on its summit plateau, respectively. Volcanic activity at Tropic Seamount commenced almost 120 million years ago and ended about 60 million years ago. Later, sedimentation commenced on the seamount leading to the deposition of manganese crusts and pelagic sediments; iron and manganese accumulated in crusts over time beginning a few tens of millions of years ago.
^Palomino et al. 2016, p. 128.
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TropicSeamount is a Cretaceous seamount, part of the Canary Islands Seamount Province. It is located west of the Western Sahara's coastline and southwest...
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