Oceanic crust Oceanic crust Oceanic crust is the uppermost layer of the oceanic portion of a tectonic plate. It is composed of the upper oceanic crust, with pillow lavas and a dike complex, and the lower oceanic crust, composed of troctolite, gabbro and ultramafic cumulates. The crust overlies the solidified and uppermost layer of the mantle. The crust and the solid mantle layer together constitute oceanic lithosphere. Oceanic crust is primarily composed of mafic rocks, or sima, which is rich in iron and magnesium. It is thinner than continental crust, or sial, generally less than 10 kilometers thick; however it is denser,
We Do What We Want MP3 for the song "Scissors" was divided into seven sections. For seven consecutive days, one new piece of the song was revealed through a different online media outlet. The band would give a clue as to where the next clip would be released on their Facebook page, and fans were encouraged to collect all of the parts and put the song back together. Also prior to the release of "We Do What We Want", Emery previewed "The Cheval Glass," "I Never Got to See the West Coast" and "The Curse of Perfect Days." "We Do What We Want" was released