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Does subduction create or destroy oceanic crust?
In a subduction zone the crust is forced inot the mantle where it is eventually melted and destroyed
Why does the continental crust go father down into the mantle than the oceanic crust?
Continental crust, on average, is much thicker than oceanic crust. Because of the principles of isostacy and buoyancy, the continental crust will protrude more deeply into the asthenosphere than oceanic crust.
Where does the old oceanic crust go?
Old oceanic crust is primarily recycled back into the Earth's mantle at subduction zones, where one tectonic plate is forced beneath another. This process leads to the destruction of the oceanic crust, as it melts and contributes to mantle convection. Additionally, some old crust may be uplifted and exposed through tectonic processes, such as orogeny, but the majority is eventually subducted and assimilated into the mantle.
What is the process by which oceanic crust sinks beneath the trenches?
Oceanic crust sinks beneath trenches through a process known as subduction. As oceanic plates collide with continental plates, the denser oceanic plate is forced downward into the mantle due to gravitational pull. This creates a subduction zone where the oceanic crust eventually melts and is recycled back into the mantle.
Do magnetic stripes on the ocean floor oceanic crust sink back into the mantle?
No, the magnetic stripes on the ocean floor form due to the alignment of magnetic minerals in the crust as it solidifies from the mantle. The oceanic crust is eventually consumed in subduction zones and recycled back into the mantle, but the magnetic stripes themselves do not sink back into the mantle.
When continental plates collide what happens to the oceanic crust between them?
When continental plates collide, the denser oceanic crust is usually subducted beneath the less dense continental crust. This process can create subduction zones, where the oceanic crust is forced downward into the mantle. The oceanic crust may melt or be recycled back into the mantle in these subduction zones.
Oceanic crust is lighter than the continental crust?
No, the oceanic crust is denser. That's why the land areas "float" so much higher than the ocean bedrock.
What is oceanic-oceanic subduction?
Oceanic crust sinking under a plate with continental crust
Is the oceanic crust felsic or mafic?
Oceanic crust is mafic.
What does it mean if the oceanic crust 0?
the oceanic crust is 0.
Where are the youngest portion of Earth's crust found?
The youngest parts of the Earth's crust are found in the oceanic crust. This crust is continuously being created at the mid-oceanic ridges.
What crust is more dense oceanic or continental crust?
Oceanic crust is significantly denser.
