Mantle (geology) Mantle (geology) The mantle is a layer inside a planetary body bounded below by a core and above by a crust. Mantles are made of rock or ices, and are generally the largest and most massive layer of the planetary body. Mantles are characteristic of planetary bodies that have undergone differentiation by density. All terrestrial planets (including Earth), a number of asteroids, and some planetary moons have mantles. The Earth's mantle is a layer of silicate rock between the crust and the outer core. Its mass of 4.01 × 10 kg is 67% the mass of the Earth. It has
The Crust Brothers The Crust Brothers The Crust Brothers, a band formed by Stephen Malkmus and members of Silkworm (Michael Dahlquist, Tim Midgett, and Andy Cohen), released one album, "Marquee Mark", a live recording of their December 5, 1997, show at the Crocodile Cafe in Seattle, Washington. MTV reporter Tayloe Emery wrote an article for MTV Music News and reported that the show was a benefit for the Washington Wilderness Coalition organized by Trevor FitzGibbon to protect roadless areas. "One of the goals of the coalition is to pressure government officials to push forward laws that would serve to protect the wilderness area,