31. Normally, the continental crust is about thick, but it reaches thick under the Tibetan Plateau. 32. The South American Plate drifted northward, riding up over the denser North American continental crust . 33. The continental crust consists of lower density material such as the igneous rocks granite and andesite. 34. The Valencia Trough consists of extended continental crust . 35. :: Continental crust is what you're looking for. 36. The CVZ is characterized by a continental crust that reaches a thickness of approximately 70 km. 37. It was derived from the pre-existing continental crust . 38. Convergent boundaries create foreland basins through tectonic compression of oceanic and continental crust during lithospheric flexure. 39. With so much remodeling and recycling going on, recognizable remains of early continental crust are scarce. 40. Plates include both oceanic crust and continental crust .
