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 Lord of the Rings: The Battle for Middle-earth for Best of E3 2004 Editors Choice. "The Battle for Middle-earth" was nominated for "X-Play"s "Best Strategy Game" and "PC Gamer US"s "Best Real-Time Strategy Game 2004" awards, both of which ultimately went to "". The Lord of the Rings: The Battle for Middle-earth The Lord of the Rings: The Battle for Middle-earth is a real-time strategy video game developed by EA Los Angeles for Microsoft Windows. It was released in December 6, 2004 and is based on Peter Jackson's "The Lord of the Rings" film trilogy, in turn based on J. R. R. Tolkien's original novel. The game uses