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
The Earth is Dancing Yugoslavia, where both the videospot and the song were also popular. In 1986s, the song was remade in synthpop style by a Slovenian teenage group Videosex and sung by singer Anja Rupel. The remake inspired Max Marijan Osole, one of the first videomakers in Slovenia, to make a musical videospot with a 1980s computer animated background. The Earth is Dancing "The Earth is Dancing" (in Slovene: ""Zemlja pleše"") is a 1962 pop song, music of which was written by Mojmir Sepe based on a lyrics by Slovene poet Gregor Strniša that was awarded at the first edition of the Slovenian