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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.
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Earth does not get bigger as new oceanic crust forms?
Just as new oceanic crust forms at mid-ocean ridges, old oceanic crust is destroyed at subduction zones.
What is the difference between contiental crust and oceanic crust?
Continental crust is on top of the oceanic crust Continental crust is made of granite whereas oceanic crust is made of basalt Continental crust is partly above sea level and partly below whereas oceanic crust is always below sea level.
Is the earth's crust older than the ocean crust?
Yes, the Earth's continental crust is generally older than the oceanic crust. Continental crust can be billions of years old, while oceanic crust is continuously being created and is typically less than 200 million years old.
Is ocean crust or landform crust yonger?
Ocean crust is younger than landform crust. Oceanic crust is constantly being created at mid-ocean ridges through volcanic activity, making it much younger in comparison to the older landform crust found on continents.
How old is the oceanic crust?
It varies, but the oldest part is 180 million years old
Why is old oceanic crust denser than new oceanic crust?
cause its cooler
Which is denser old oceanic crust or new oceanic crust?
how is this food and cooking? it is geography
Earth does not get bigger as new oceanic crust forms?
Just as new oceanic crust forms at mid-ocean ridges, old oceanic crust is destroyed at subduction zones.
Where does the ocean floor go to after 180 million years?
Where old oceanic crust meets continental crust or younger oceanic crust at a convergent plate boundary it gets forced down into the mantle. This process does not necessarily happen when the crust is 180 millions years old. Rather, the oldest oceanic crust is found along the edges of the Atlantic ocean, dating to when it first formed in the Jurassic period.
What does ocean crust mean in science?
The oceanic crust is the part of the earth's crust that is below the ocean. The rock that makes up the oceanic crust is about 200 million years old.
What is the difference between contiental crust and oceanic crust?
Continental crust is on top of the oceanic crust Continental crust is made of granite whereas oceanic crust is made of basalt Continental crust is partly above sea level and partly below whereas oceanic crust is always below sea level.
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.
Is the earth's crust older than the ocean crust?
Yes, the Earth's continental crust is generally older than the oceanic crust. Continental crust can be billions of years old, while oceanic crust is continuously being created and is typically less than 200 million years old.
Is ocean crust or landform crust yonger?
Ocean crust is younger than landform crust. Oceanic crust is constantly being created at mid-ocean ridges through volcanic activity, making it much younger in comparison to the older landform crust found on continents.
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
How old is the oceanic crust?
It varies, but the oldest part is 180 million years old
