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Mid-ocean ridge cross-section (cut-away view) A mid-ocean ridge (MOR) is a seafloor mountain system formed by plate tectonics. It typically has a depth of about 2,600 meters (8,500 ft) and rises about 2,000 meters (6,600 ft) above the deepest portion of an ocean basin. This feature is where seafloor spreading takes place along a divergent plate ...
A bathymetric map of the Mid-Atlantic Ridge (shown in light blue in the middle of the Atlantic Ocean). The Mid-Atlantic Ridge is a mid-ocean ridge (a divergent or constructive plate boundary) located along the floor of the Atlantic Ocean, and part of the longest mountain range in the world.
Map of the Chile Rise and its fracture zones in Nazca and the Antarctic Plates Active Pacific Ocean fracture zones are perpendicular to the mid-ocean ridges (black lines) in orange shaded region. Since the map was prepared ages not shown of south-west Pacific and north Pacific ocean floors may have been characterised.
Continental-continental divergent/constructive boundary Oceanic divergent boundary: mid-ocean ridge (cross-section/cut-away view). In plate tectonics, a divergent boundary or divergent plate boundary (also known as a constructive boundary or an extensional boundary) is a linear feature that exists between two tectonic plates that are moving away from each other.
Juan de Fuca Ridge. Coordinates: 46°N 130°W. Location of the Juan de Fuca ridge off the coast of North America. Magnetic striping on either side of the ridge helps date the rock and determine spreading rate and age of the plate. The Juan de Fuca Ridge is a mid-ocean spreading center and divergent plate boundary located off the coast of the ...
The northern boundary of the Cocos Plate is the Middle America Trench. The eastern boundary is a transform fault, the Panama Fracture Zone. The southern boundary is a mid-oceanic ridge, the Galapagos Rise. [3] The western boundary is another mid-ocean ridge, the East Pacific Rise. A hotspot under the Galapagos Islands lies along the Galapagos Rise.
Plate tectonics map. The East African Rift (Great Rift Valley) in eastern Africa; The Mid-Atlantic Ridge system separates the North American Plate and the South American Plate in the west from the African Plate and the Eurasian Plate in the east; The Gakkel Ridge is a slow spreading ridge located in the Arctic Ocean
e. A continental shelf is a portion of a continent that is submerged under an area of relatively shallow water, known as a shelf sea. Much of these shelves were exposed by drops in sea level during glacial periods. The shelf surrounding an island is known as an insular shelf. The continental margin, between the continental shelf and the abyssal ...