Structure of the Earth obducted onto the continental crust and preserved as ophiolite sequences. Many rocks now making up Earth's crust formed less than 100 million (1) years ago; however, the oldest known mineral grains are about 4.4 billion (4.4) years old, indicating that Earth has had a solid crust for at least 4.4 billion years. Earth's mantle extends to a depth of 2,890 km, making it the thickest layer of Earth. The mantle is divided into upper and lower mantle. The upper and lower mantle are separated by the transition zone. The lowest part of the mantle next to the core-mantle boundary is
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