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The oceanic crust is denser

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โˆ™ 9y ago
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โˆ™ 12y ago

Our earth ha three layers.1.Crust,which is the uppermost layer where we live.

2.Mantle,which is just under the crust,which is full of heavy metals like Iron and aluminium.

3.Core,which is the innermost layer and is full with high density liquid.Actually metals and other materials are in the form of liquid due to high temperature.Its temperature is exactly 6000 degrees Celsius which is the surface temperature of the sun.So,its very hot there.

Now,as I told crust is the outer part.It is floating like a ship on Mantle which is a great ocean of minerals.The crust if formed of plates.Some are oceanic plates and some are continental plates.All are floating on Mantle that answers why oceanic under continental crust.If you have problems you can ask me.I'm here.

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โˆ™ 10y ago

Because the weight of the ocean makes the oceanic crust sit lower than the continental crust, which forces the oceanic crust under the continental crust.

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Q: Why is ocean crust subducted under continental crust?
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Why is oceanic crust always subducted underneath the continental crust?

Oceanic crust subducts under continental crust because it is denser. Continental crust's density is too low for it to be forced into the mantle.


How does the age of the oldest continental crust compare to the age of the oldest ocean crust?

The oldest continental crust would be between three and one half to four billion years older than the oldest oceanic crust. This is due to the fact that ocean plates are subducted under the continental plates, subjected to partial melt and essentially recycled in the mantle before reforming.


How does the age of the oldest continental crust compare to the age of the oldest ocean crust-?

The oldest continental crust would be between three and one half to four billion years older than the oldest oceanic crust. This is due to the fact that ocean plates are subducted under the continental plates, subjected to partial melt and essentially recycled in the mantle before reforming.


How do oceanic and continental crust differ?

Because the oceanic crust is under water in the ocean and a continental crust is land such as the continents


How does the age of the oldest continental crust compared to the age of the oldest oceanic crust?

The oldest continental crust would be between three and one half to four billion years older than the oldest oceanic crust. This is due to the fact that ocean plates are subducted under the continental plates, subjected to partial melt and essentially recycled in the mantle before reforming.

Related questions

What type plate margin are ocean trenches associated with?

Convergent plate margins where oceanic crust is being subducted under continental crust.


What is likely to form where oceanic crust is subducted under continental crust?

because oshieotic crust is under Mantle is thicker


Why is oceanic crust always subducted underneath the continental crust?

Oceanic crust subducts under continental crust because it is denser. Continental crust's density is too low for it to be forced into the mantle.


What do one oceanic and one continental crust produce when the oceanic crust is subducted under the continental one?

A trench and a strata volcano.


Where are the elder parts of the ocean floor located?

Oceanic crust is created at mid-ocean ridges and (through the creation of new oceanic crust) is pushed toward a convergent plate boundary where it is subducted. So the oldest oceanic crust would be located at a convergent plate boundary where the oceanic crust is being subducted under continental crust.


How does the age of the oldest continental crust compare to the age of the oldest ocean crust?

The oldest continental crust would be between three and one half to four billion years older than the oldest oceanic crust. This is due to the fact that ocean plates are subducted under the continental plates, subjected to partial melt and essentially recycled in the mantle before reforming.


When does a plate carrying continental crust converges with a plate carrying oceanic crust?

The oceanic plates gets subducted or goes under the continental plate


Why do deep-ocean trenches form at both types of subduction?

The deepest portions of the subducting plate get pulled under by the subducted plate. This is how the trench is formed. this process is at work when any subduction occurs. An oceanic-continental subduction occurs when ocean crust sinks under continental crust. The oceanic crust sinks because it is colder and denser than the continental crust. At these sites, deep-ocean trenches form, along with coastal mountains.


How does the age of the oldest continental crust compare to the age of the oldest ocean crust-?

The oldest continental crust would be between three and one half to four billion years older than the oldest oceanic crust. This is due to the fact that ocean plates are subducted under the continental plates, subjected to partial melt and essentially recycled in the mantle before reforming.


How does the age of the oldest continental crust compare to the of the oldest ocean crust?

The oldest continental crust would be between three and one half to four billion years older than the oldest oceanic crust. This is due to the fact that ocean plates are subducted under the continental plates, subjected to partial melt and essentially recycled in the mantle before reforming.


How does the age of the oldest continental crust compare to the age of oldest ocean crust?

The oldest continental crust would be between three and one half to four billion years older than the oldest oceanic crust. This is due to the fact that ocean plates are subducted under the continental plates, subjected to partial melt and essentially recycled in the mantle before reforming.


Why is the oceanic plate subducted when an oceanic plate collides with a continental plate?

The Oceanic plate is subducted under the Continental plate because oceanic crust is much more dense than continental crust. The average density of the oceanic crust is 3g/cm^3 while the average density of continental crust is 2.7g/cm^3.