What is the relationship between the crust and the mantle?
What is the relationship between the crust and the mantle? The crust floats on the mantle in an isostatic relationship. Where the crust becomes thicker because of mountain building, it pushes farther down into the mantle. Oceanic crust, being heavier than continental crust, floats lower on the mantle. Is the crust and the mantle the same? “Crust” describes the outermost shell of a terrestrial planet. The crust is made of solid rocks and minerals. Beneath the crust is the mantle, which is also mostly solid rocks and minerals, but punctuated by malleable areas of semi-solid magma. At the center of...