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
It'z Just What We Do though. Producer Joey Moi (Jake Owen, Nickelback) is a fine match for the duo’s country-meets-alt-rock sound." The album peaked at number 18 on the Top Country Albums chart. Additionally, it peaked on number 105 on the US "Billboard" 200, on number 45 on the Independent Albums chart, and reached number one on the Top Heatseekers chart. The EP starts off with "Cruise" and also includes "Get Your Shine On", "Tip It Back", "Tell Me How You Like It", and the title track "It'z Just What We Do". It'z Just What We Do It'z Just What We Do is the second