Geography, asked by trisha48, 1 year ago

oceanic crust is composed of

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Answered by Anonymous
1
several layers
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oceanic crust is composed of several layers.


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Oceanic crust is about 6 km thick.
This serval layers are not including of the overlying sediment. 



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The topmost layer is about 500 metres thick. This is includes lavas made of basalt.



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The oceanic crust is made from basalt rock that is thinner than the continental crust.


The asthenosphere is a plastic-like solid that can flow like a liquidbecause it is under pressure.
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