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Sea floor spreading in real life.
The concept of sea floor spreading.
Basalt the once molten rock that makes up most new oceanic crust is a fairly magnetic substance and scientists began using magnetometers to measure the magnetism of the ocean floor in the 1950s what they discovered was that the magnetism of the ocean floor around.
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Seafloor spreading theory that oceanic crust forms along submarine mountain zones and spreads out laterally away from them.
As two tectonic plates slowly separate molten material rises up from within the mantle to fill the opening.
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Seafloor spreading definition a process in which new ocean floor is created as molten material from the earth s mantle rises in margins between plates or ridges and spreads out.
This community lives in or near marine sedimentary environments from tidal pools along the foreshore out to the continental shelf and then down to the abyssal depths the benthic zone is the ecological region on in and immediately above the seabed including the sediment surface.
Continental shelf 300 feet continental slope 300 10 000 feet abyssal plain 10 000 feet abyssal hill 3 000 feet up from the abyssal plain seamount 6 000 feet.
The concept of seafloor spreading was put forward by h harry hess an american geologist.
This graphic shows several ocean floor features on a scale from 0 35 000 feet below sea level.
Seafloor spreading real life examples.
Benthos is the community of organisms which live on in or near the seabed the area known as the benthic zone.
Further he claimed that continents would be pushed aside by the same forces that cause the ocean to grow.
The following features are shown at example depths to scale though each feature has a considerable range at which it may occur.
This idea played a pivotal role in the development of the theory of plate tectonics which revolutionized geologic thought during the last quarter of the 20th century.
In this way the rugged volcanic landscape of a mid ocean ridge is created along the plate boundary.