what is the meaning of mid-ocean ridge
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- Freebase (5.00 / 1 vote) Rate this definition: Mid-ocean ridge. A mid-ocean ridge is a general term for an underwater mountain system that consists of various mountain ranges, typically having a valley known as a rift running along its spine, formed by plate tectonics.
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Mid-ocean ridge The rate at which the mid-ocean ridge creates new material is known as the spreading rate, and is generally measured in mm/yr. The common subdivisions of spreading rate are fast, medium, and slow with values generally being >100 mm/yr, 100–55 mm/yr, and 55–20 mm/yr, respectively.
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- It is the location where new oceanic crust, which is both the material for seafloor spreading and an important source of heat to the Earth's. surface, is formed. At mid-ocean ridges, new crust forms and cracks as it cools and as it spreads away from. the ridge crest. Cold seawater penetrates the warm crust.
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- The mid-oceanic ridges rise 3000 meters from the ocean floor and are more than 2000 kilometers wide surpassing the Himalayas in size. The mapping of the seafloor also revealed that these huge underwater mountain ranges have a deep trench which bisects the length of the ridges and in places is more than 2000 meters deep.
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Mid-ocean ridge The buoyant melt rises as magma at a linear weakness in the oceanic crust, and emerges as lava, creating new crust upon cooling. A mid-ocean ridge demarcates the boundary between two tectonic plates, and consequently is termed a divergent plate boundary. mid-ocean ridge demarcates the boundary between two tectonic plates, and consequently is termed a divergent plate boundary.
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- Seamount and Guyot. Mid-Oceanic Ridges  1.These are the most conspicuous features of the ocean basins.  2.The mid-ocean ridge is a continuous chain of mountains that runs from the central Arctic Ocean down through the Atlantic, through the Indian Ocean and northward through the eastern Pacific.  3.The mid-ocean ridge is approximately 1000 km wide and rises 1000 to 3000 m above the adjacent seafloor.  4.The mid-ocean ridge is 60,000 km long and covers 21% of Earth's surface.  5.
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- Mid-ocean ridges are divergent boundaries that push apart two plates. As the plates on either side of a mid-ocean ridge move, transform faults are created due to variances in plate motion. As the plates continue to move over time, these faults offset the mid-ocean ridge. These offsets cause fractures in the ocean floor that can extend for hundreds of kilometers out from a mid-ocean ridge.
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- Mid-ocean ridges. Mid-ocean ridges such as the Mid-Atlantic Ridge are places in the Earth's system of tectonic plates where new crust forms and the plates move away from one another. Powered by magma rising and falling in the mantle, these undersea mountain ranges are formed by numerous eruptions of basalt lava along their length.
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- Share to: The Mid-Atlantic Ridge (MAR) is a mid-ocean ridge, a divergent tectonic plate boundary located along the floor of the Atlantic Ocean, and part of thelongest mountain range in … the world.hare to: The Mid-Atlantic Ridge (MAR) is a mid-ocean ridge, a divergent tectonic plate boundary located along the floor of the Atlantic Ocean, and part of thelongest mountain range in … the world.
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Mid Ocean Ridge Great Mountain Chain Length of global mid-ocean ridge system. The entire global mid-ocean ridge system in the oceans is 49,700 miles (80,000 km) long. It has a continuous mountain system that is 40,400 miles (65,000 km) long making it the longest mountain range on Earth. Section of the mid-ocean ridge system. on the ocean floor, NOAA.
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Mid-Atlantic Ridge Share to: The Mid-Atlantic Ridge (MAR) is a mid-ocean ridge, a divergent tectonic plate boundary located along the floor of the Atlantic Ocean, and part of thelongest mountain range in … the world.
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Atlantic Ocean The bathymetry of the Atlantic is dominated by a submarine mountain range called the Mid-Atlantic Ridge (MAR). It runs from 87°N or 300 km (190 mi) south of the North Pole to the subantarctic Bouvet Island at 42°S.
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- University of California, Santa Barbara. The mid-ocean ridge system is the most extensive chain of mountains on earth, but more than 90% of this mountain range lies in the deep ocean. The mid-ocean ridge wraps around the globe for more than 65,000 km like the seam of a baseball. The average depth to the crest (top) of the ridge is 2500 m, but it rises above sea-level in Iceland and is more than 4000 m deep in the Cayman Trough.
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Atlantic Ocean The Mid-Atlantic Ridge (MAR) is a mostly underwater mountain range in the Atlantic Ocean that runs from 87°N -about 333km south of the North Pole- to subantarctic Bourvet island at 54°S. The ridge was discovered in the 1950s.
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Mid-Ocean Ridges In the Atlantic Ocean, the mid-ocean ridge is called the Mid-Atlantic Ridge. It curves from the Arctic Ocean southward, through Iceland, down the center of the Atlantic, and around the bottom of Africa.
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- The mid-ocean ridge is the Earth's longest continuous mountain range, approximately 55-65 thousand kilometers long and bilaterally divided by a valley called a rift. The mid-ocean ridge is a volcanic feature caused by the spreading apart of oceanic plates as part of plate tectonics.
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Mid-ocean ridge The mid-ocean ridges of the world are connected and form a single global mid-oceanic ridge system that is part of every ocean, making the mid-oceanic ridge system the longest mountain range in the world, with a total length of about 60,000 km.
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What is the difference between a mid-ocean ridge, and a trench? Report Abuse. A trench is due to the convergence of two oceanic plates. One is subducted under the other and forms a deep trench. A mid-ocean ridge is due to sea floor spreading.There, two oceanic plates are being pushed apart due to the formation of new sea floor. This new sea floor creates a large ridge.eport Abuse. A trench is due to the convergence of two oceanic plates. One is subducted under the other and forms a deep trench. A mid-ocean ridge is due to sea floor spreading.
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The Mid-Atlantic Ridge in Iceland Thus the mid-ocean ridge is also known as a spreading center or a divergent plate boundary.. The plates spread apart at rates of 1 cm to 20 cm per year. As oceanic plates move apart, rock melts and wells up from tens of kilometers deep.hus the mid-ocean ridge is also known as a spreading center or a divergent plate boundary.. The plates spread apart at rates of 1 cm to 20 cm per year. As oceanic plates move apart, rock melts and wells up from tens of kilometers deep.
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The Mid-Ocean Ridge system forms the most extensive chain of mountains on Earth, with more than 90 percent of the mountain range lying in the deep ocean. The Mid-Ocean Ridge system forms the most extensive chain of mountains on Earth, with more than 90 percent of the mountain range lying in the deep ocean. The nearly continuous, global Mid-Ocean Ridge system snakes across the Earth’s surface like the seam on a baseball.
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- Professor, Marine Geophysics. University of California, Santa Barbara. The mid-ocean ridge system is the most extensive chain of mountains on earth, but more than 90% of this mountain range lies in the deep ocean. The mid-ocean ridge wraps around the globe for more than 65,000 km like the seam of a baseball.
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The Mid-Atlantic Ridge in Iceland Thus the mid-ocean ridge is also known as a spreading center or a divergent plate boundary.. The plates spread apart at rates of 1 cm to 20 cm per year. As oceanic plates move apart, rock melts and wells up from tens of kilometers deep.he mid-ocean ridge wraps around the globe for more than 65,000 km like the seam of a baseball. The average depth to the crest (top) of the ridge is 2500 m, but it rises above sea-level in Iceland and is more than 4000 m deep in the Cayman Trough.
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Mid-Atlantic Ridge Although the Mid-Atlantic Ridge is mostly an underwater feature, portions of it have enough elevation to extend above sea level. The section of the ridge that includes the island of Iceland is also known as the Reykjanes Ridge. The ridge has an average spreading rate of about 2.5 cm per year. 1 Discovery.
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- The greatest mountain range is the Mid-Ocean Ridge, extending 64,374 km (40,000 miles) from the Arctic Ocean to the Atlantic Ocean, around Africa, Asia, and Australia, and under the Pacific Ocean to the west coast of North America.