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The Pacific region spreads 80-120 mm/yr, while the north Atlantic Ocean is just ~ 25 mm/yr.
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What is the seafloor spreading apart at?
The rate at which the seafloor is spreading apart can vary, but typically it ranges from a few centimeters to a few tens of centimeters per year. This spreading occurs along mid-ocean ridges where tectonic plates are moving away from each other, creating new oceanic crust.
A typical rate of seafloor spreading in the Atlantic Ocean?
The typical rate of seafloor spreading in the Atlantic Ocean is around 2.5 centimeters per year. This rate can vary along different sections of the Mid-Atlantic Ridge, with some areas spreading faster than others due to tectonic activity.
What ridge has the slowest rate of seafloor spreading?
The Mid-Atlantic Ridge has one of the slowest rates of seafloor spreading, averaging about 2.5 cm per year. This ridge is located in the Atlantic Ocean and is less active compared to other spreading ridges like the East Pacific Rise.
How do you calculate the rate of seafloor spreading?
rate of spreading for stripe = width of stripe / time duration If a magnetic strips is 60 km wide and formed over 2 million years, then the rate at which spreading formed the was 30 km/m.y. The rate is equivalent to 3 cm/year. Spreading added an equal width of oceanic crust to a plate on the other side of the mid-ocean ridge, so the total rate of spreading across the ridge was 60 km/m.y. (6 cm/year), a typical rate of seafloor spreading.
The average spreading rate for fast spreading divergent plates?
The average spreading rate for fast spreading divergent plates is typically around 5-9 centimeters per year. This rate is significantly higher than the spreading rate for slow spreading plates, which is usually less than 2.5 centimeters per year. Fast spreading plates can create oceanic ridges and lead to the formation of new oceanic crust.
How do strip of magnetized rock on the ocean floor provide evidence of sea-floor spreading?
Strips of ocean-floor basalt record the polarity of earth's magnetic field at the time the rock formed. These strips form a pattern that is the same on both sides of the mid-ocean ridge. the pattern shows that ocean floor forms along mid-ocean ridges and then moves away from the ridge.
How do you calculate half sea floor spreading rate?
To calculate the half sea floor spreading rate, you would divide the total spreading rate by 2. The spreading rate is typically measured in millimeters or centimeters per year and represents the rate at which tectonic plates move away from each other at a mid-ocean ridge. Calculating the half spreading rate is useful for determining the rate at which new oceanic crust is being generated on one side of a mid-ocean ridge.
What is the spreading rate of the East Pacific Rise?
The spreading rate of the East Pacific Rise is approximately 5-8 centimeters per year. This spreading rate refers to the rate at which new oceanic crust is formed as tectonic plates diverge along the mid-ocean ridge.
New ocean floor is constantly being produced in the process known as?
There are three processes that add material to the ocean floor: Sedimentation, and Vulcanism. Sedimentation is usually caused by skeletons of sea animals falling to the ocean floor. It can be argued that this is not new material but only recycled materials. But some of the remains are calcium or other deposits that are added from land based run off. Silt deposits also run into the ocean floor from the land, Vulcanism results from shifts in the ocean mantle with new material coming from deeper in the earth and spouting through volcanoes or emerging as new ocean floor at the rising edges of the tectonic plates.
What is the modern seafloor spreading rate range?
Typical rates of spreading average around 5 centimeter (2 inches) per year.
How much does the east Pacific spearding each year?
The East Pacific Rise spreads at a rate of roughly 5 centimeters per year. This spreading occurs due to tectonic plate movement, where new oceanic crust is created as magma rises up from the mantle at the mid-ocean ridges.
Why are the magnetic strips in the pacific ocean wider than the ones in the Atlantic ocean?
The Pacific seafloor formed at a faster spreading rate than the Atlantic seafloor.
