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Oceanic crust isn't destroyed because it's old; it is, in fact, destroyed due to destructive plate boundaries. This is where a continental plate and an oceanic plate move towards each other. As the oceanic crust is denser, it is pushed under the continental plate. Here it is forced into the mantle of the earth, where it is destroyed due to heat and convection currents.
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∙ 10y ago
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∙ 10y agoOld oceanic crust is destroyed at subduction zones. At these locations, a plate with old, dense oceanic crust collides with either continental crust or younger, less dense oceanic crust. The denser oceanic crust is forced downward by the lighter crust and into the mantle, where it is gradually assimilated.
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∙ 15y agoOceanic crust is destroyed under a continent.
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∙ 14y agoOceanic Crust is destroyed under a continent.
near ocean trenches.
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∙ 12y agoThe sea floor is pushed down into the earths core for it to become new again
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∙ 13y agoAt subduction zones along convergent plate boundaries.
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What boundary seafloor destroyed?
At a convergent boundary. if seafloor is created at a divergent boundary then it must be the opposite (at a convergent boundary) where is being destroyed.
Sea floor is destroyed in which plate boundry?
At a convergent boundary. if seafloor is created at a divergent boundary then it must be the opposite (at a convergent boundary) where is being destroyed.
Does seafloor spreading cause the earth's crust to expand?
New oceanic crust is being created at seafloor spreading zones, and crust is alternately being subducted and destroyed at subduction zones.
How does the age of rocks in the seafloor provide evidence of seafloor spreading?
Rocks in the seafloor are moving one place to another
Seafloor is the process by which new crust is created when the seafloor moves apart and magma rises up?
seafloor spreading
What boundary seafloor destroyed?
At a convergent boundary. if seafloor is created at a divergent boundary then it must be the opposite (at a convergent boundary) where is being destroyed.
Sea floor is destroyed in which plate boundry?
At a convergent boundary. if seafloor is created at a divergent boundary then it must be the opposite (at a convergent boundary) where is being destroyed.
Does seafloor spreading cause the earth's crust to expand?
New oceanic crust is being created at seafloor spreading zones, and crust is alternately being subducted and destroyed at subduction zones.
What is the age of the oldest seafloor?
The oldest seafloor is estimated to be around 200 million years old. New oceanic crust is continuously formed at mid-ocean ridges, so the seafloor is constantly being recycled.
Does theory continental drift state that new ocean crust is formed at ocean ridges and destroyed at deep sea trenches?
No, the theory is that Seafloor spreading state that the new ocean crust is formed at ocean ridges and is destroyed at deep sea trenches.
What age is the oldest rocks from the seafloor?
The oldest rock are up to 125 million years old.
What occurs at divergent boundaries and creates new seafloor?
At divergent plate boundaries the spreading of the tectonic plates results in the reduced pressure of the underlying magma. As the spreading continues, lava fills in the area of spreading and cools, becoming the newest addition to the seafloor. This process occurs at a steady rate ranging from a few centimeters to several centimeters of new sea floor each year. However, at a different location opposite the newly formed seafloor are convergent plate boundaries where land and seafloor is destroyed to make room for new seafloor.
What seafloor is the process by which new crust is created when seafloor moves apart and magma rises?
Seafloor Spreading
Process that forms new seafloor?
Seafloor Spreading
Explain the relationship between trenches and seafloor spreading?
1. New sea-floor is created by the upwelling of magma at mid-ocean spreading centers; old ocean floor is destroyed by subduction at deep sea trenches. 2. The area is a subduction zone. Magma from underground comes up and destroys that crust. That crust is then recycled and the magma cools and hardens. That creates new land, that creates the trenches. Seafloor spreading is in the ocean and happens with convection currents. That is the relationship between. 3. As new seafloor is formed at mid-ocean ridges, the old seafloor is pushed down into trenches at subduction zones.
How does the age of rocks in the seafloor provide evidence of seafloor spreading?
Rocks in the seafloor are moving one place to another
Seafloor is the process by which new crust is created when the seafloor moves apart and magma rises up?
seafloor spreading
