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Plate Tectonics

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Elise Greenholt

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3y ago
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Cards in this guide (7)
What mechanical layer lies below the lithosphere

asthenosphere

What happens during subduction

Dense oceanic crust slides under less dense continental crust

Why can diamonds form in the mantle

The weight of the rocks above the mantle results in high pressure.
Diamonds need high temperatures and pressure to form from carbon. Diamonds form in the mantle in certain zones where conditions are right for them to do so.

There just happens to be the right critical temperature-pressure-mineral environment in the mantle in certain zones for their formation.

Which was an argument used to dispute the theory of plate tectonics

Continents cannot cut through the ocean floor.

Which type of fault is under compression

Reverse

Its Thrust!

The continental crust is what

The continental crust is up to 70 km thick.

New crust forms

At ocean ridges

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