11. They also found that the oceanic crust was much thinner than continental crust . 12. Granites and similar rocks, known as meta-granitoids, form much of the continental crust . 13. Oceanic crust is also denser than continental crust owing to their different compositions. 14. The underwater part constitutes about 20 % of the continental crust . 15. As the oceanic crust dives into trenches, the continental crust collects above them. 16. When two plates containing continental crust collide, both are too light to subduct. 17. "It's the infusion of all that granite that turns island arcs into continental crust ," 18. When continents collide, the continental crust may thicken at their edges in the collision. 19. This earthquake ruptured up to of the top part of the local continental crust . 20. The Campbell Plateau is made of continental crust , but, as such, is unusually thin.
