How is continental lithosphere different from oceanic lithosphere?
The difference is that the oceanic lithosphere is that which is formed by oceanic crust and residual mantle. It constitutes the bottoms of the oceans and has an average thickness of 150 km but in the great mountain ranges that are in the bottom of the oceans, the denominated ocean ridges, its thickness is only 10 km. In contrast the continental lithosphere: It is the one that is formed by continental crust and residual mantle. It is what constitutes the continents. It has an average thickness of about 150 km.