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Oceanic crust returns to the mantle at deep ocean trenches which are?
Wiki User
∙ 11y ago
rocks
Wiki User
∙ 11y ago
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At deep ocean trenches what allows oceanic crust to sink back into the mantle?
Conduction. Heat istransferred from the mantle to the crust, melting it to become part of the mantle.
At deep-ocean trenches what allows oceanic crust to sink back into the mantle?
Subduction.
What are places where oceanic crust sinks back to the mantle?
No. Mid oceanic ridges are the places where new oceanic crust are forming.
Is it true that many volcanoes form near colliding plate boundaries where oceanic crust returns to the mantle?
Yes
Earth crust grows at mid ocean ridges why doesnt the earth grow larger?
At the opposite end of the convection current in the Earth's mantle that creates oceanic crust at the mid-ocean ridge, are trenches, where oceanic crust is diving down into the mantle. The Atlantic Ocean is expanding. The Pacific Ocean is shrinking.
What is oceanic lithosphere?
The lithosphere is composed of crust and hard upper mantle. The oceanic lithosphere would be hard upper mantle and basaltic oceanic crust.
What is the oceanic lithosphere?
The lithosphere is composed of crust and hard upper mantle. The oceanic lithosphere would be hard upper mantle and basaltic oceanic crust.
Crust under the ocean is called?
Crust under the oceans is called oceanic crust.
What kind of crust usually goes into the mantle?
Oceanic crust gets subducted into the mantle.
What is the source material in basaltic magma?
Oceanic crust and oceanic sediments.
What are 2 landforms that are created at by oceanic oceanic crust?
Trenches and undersea mountains :)
Are oceanic plates only made up of oceanic crust?
yes but oceanic crust is younger than continental crust because of deep sea trenches
