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5 Cards in this Set
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Crustal root |
the root under a mountain, that extends into the lithosphere. For every one kilometre there is an extra 6km of crustal root. Kind of like an ice berg |
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Crustal thickness |
Crustal thickness extends to a depth called the Moho, that sperates the crust from the mantle |
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new continental crust is formed above subduction zones. |
ocean to ocean subduction causes water to mix with mantle, hydration meltic occurs and magma becomes more felsic No new crust is formed in a continent to continent collision, mountains are produced. Larger continents are formed from collisions of smaller continental fragments in a process called accretion |
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Wilson cycles |
wilson cycles describe the cycle of accretion and then rearrangement through rifting and transform of supercontinents |
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