At last, an undergraduate textbook integrating the geophysics, geochemistry, and petrology of the Earth to explain plate tectonics and geodynamics.Assuming the upper crust has a thickness of 12 km, how thick would the total crust be if its overall composition was basaltic? ac If 12 km ... How does this total crustal thickness compare with the thickness of the continental crust from seismic refraction (Chapter 1)? ... You should recall from Chapters 5 and 7 that during subduction, as pressure increases, the ocean crust is transformed into eclogite, which is aanbsp;...
|Title||:||An Introduction to Our Dynamic Planet|
|Author||:||Nick Rogers, Stephen Blake|
|Publisher||:||Cambridge University Press - 2008-02-14|