Structure of the Earth decay of radioactive elements, and freezing of the inner core. Structure of the Earth The internal structure of the Earth is layered in spherical shells: an outer silicate solid crust, a highly viscous asthenosphere and mantle, a liquid outer core that is much less viscous than the mantle, and a solid inner core. Scientific understanding of the internal structure of the Earth is based on observations of topography and bathymetry, observations of rock in outcrop, samples brought to the surface from greater depths by volcanoes or volcanic activity, analysis of the seismic waves that pass through the Earth, measurements of
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,