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The Tectonic Cycle
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The internal structure of the earth
Crust. Mantle. Outer core. Inner core.
Crust:
Solid rock
Mantle:
Molten and semi-molten rock
Outer Core:
Mainly iron, molten state
Inner Core:
Iron and nickel,
solid state 5000+c
Continental crust?
Thick
30-70km thick
Silica and granite SIAL
Oceanic crust?
Thinner than continental
3-10km thick
Heavy rocks eg basalt
Silica and magnesium SIMA
Author
Anonymous
ID
252986
Card Set
The Tectonic Cycle
Description
Geography notes
Updated
12/13/2013, 4:36:04 PM
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