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Q: When did the oceanic sink?
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A region where oceanic plates sink down into the asthenosphere?

a region where oceanic plates sink down into the asthenosphere is called a subduction zone.


A region where oceanic plates sink down?

Subduction Zone


Is there magnetic strips on the ocean floor are places where oceanic crust sink back to the mantle?

Is there magnetic stripe son the ocean floor are places where oceanic crust sink back to the mantle


Why does oceanic rock always sink below continental rock?

subduction


What is A region where oceanic plates sink down into the lithosphere?

A subduction zone.


Can oceanic crust sink?

It is denser than continental crust.


When a continental plate and an oceanic plate collide why does the oceanic plate sink below the continental plate?

The oceanic plate is denser than the continental plate due to its composition of heavier mafic rock. This density difference causes the oceanic plate to sink below the continental plate in a process known as subduction.


Why does the oceanic crust sink beneath the continental crust at the subduction zone?

density


At deep-ocean trenches what allows oceanic crust to sink back into the mantle?

Subduction.


When does a part of an oceanic plate sink into the mantle what is the answer?

During an earthquake, sometimes causing a sunami.


Why does oceanic lithosphere sink beneath continental lithosphere at convergent boundary's?

As odd as it is to think of things this way, continental lithosphere is more buoyant than oceanic lithosphere. The oceanic lithosphere is more dense.


How do the mountains that form along an oceanic-oceanic convergent boundary differ from those associated with an oceanic continental convergent boundary?

the oceanic plates are denser than continental plates, therefore, when oceanic plates and continental plates converge, the oceanic will go under the continental plates. But when two oceanic converge either both will rise to form moutains, or both will sink and cause a trench.