Geography

Question

Oceanic crust is composed mainly of basalt. Continental crust

78%

iS composed mainly granite Why does oceanic crust generally

tend to sube

elates collide?

Legin

set than

Answer

Oceanic crust is denser than continental crust, so when two tectonic plates collide, the denser oceanic crust is forced underneath the lighter continental crust, causing it to subduct.

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Oceanic crust is composed mainly of basalt, which is denser than the granite that makes up the majority of continental crust. When two tect...