21. The first mechanism also calls upon the subduction of the Indian continental crust below Tibet. 22. The rocks are similar to Earth's granitic continental crust . 23. The welt of juvenile ANS crust was trapped between great tracts of converging continental crust . 24. Continental crust has the highest amount of silicon ( such rock is called felsic ).25. The average composition of the continental crust is andesitic. 26. Oceanic crust can be subducted, while continental crust cannot. 27. He first deduced the continental crust transition structure what is now named the Conrad discontinuity. 28. The deepest area is oceanic rather than continental crust . 29. Magma generated above the subducting slab rose into the North American continental crust about inland. 30. The continental crust is composed primarily of Archaean, Proterozoic and some Palaeozoic granites and gneisses.
