Lithosphere-Asthenosphere boundary Lithosphere-Asthenosphere boundary The Lithosphere-Asthenosphere boundary (LAB) represents a mechanical difference between layers in Earth’s inner structure. Earth’s inner structure can be described both chemically (crust, mantle, core) and mechanically. The Lithosphere-Asthenosphere boundary (referred to as the LAB by geophysicists) lies between Earth's cooler, rigid lithosphere and the warmer, ductile asthenosphere. The actual depth of the boundary is still a topic of debate and study, although it is known to vary according to the environment. The LAB is determined from the differences in the lithosphere and asthenosphere including, but not limited to, differences in grain size, chemical composition, thermal properties, and
Heaven Is Earth Feigel stated: "If you can get through the first few tracks, it gets easier, but Heaven is Earth isn’t anything you need to rush out and grab for your collection." Heaven Is Earth Heaven Is Earth is a studio album by the American rock band Self Defense Family. It's the band's fifth studio album overall, and second effort after changing its name from End of a Year to Self Defense Family. The album was released on June 30, 2015 through Deathwish Inc. For "Heaven Is Earth", Self Defense Family recorded two tracks with four producers in four different cities on