Lithosphere for silicate rocks, and formula_4 is the age of the given part of the lithosphere. The age is often equal to L/V, where L is the distance from the spreading centre of mid-oceanic ridge, and V is velocity of the lithospheric plate. Oceanic lithosphere is less dense than asthenosphere for a few tens of millions of years but after this becomes increasingly denser than asthenosphere. This is because the chemically differentiated oceanic crust is lighter than asthenosphere, but thermal contraction of the mantle lithosphere makes it more dense than the asthenosphere. The gravitational instability of mature oceanic lithosphere has the
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