Core–mantle boundary Core–mantle boundary The core–mantle boundary (CMB in the parlance of solid earth geophysicists) of the Earth lies between the planet's silicate mantle and its liquid iron-nickel outer core. This boundary is located at approximately 2891 km (1796 mi) depth beneath the Earth's surface. The boundary is observed via the discontinuity in seismic wave velocities at that depth due to the differences between the acoustic impedances of the solid mantle and the molten outer core. P-wave velocities are much slower in the outer core than in the deep mantle while S-waves do not exist at all in the liquid portion of
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