Crust (geology) centers, where partial-melting of the underlying mantle yields basaltic magmas and new ocean crust forms. This "ridge push" is one of the driving forces of plate tectonics, and it is constantly creating new ocean crust. That means that old crust must be destroyed somewhere, so, opposite a spreading center, there is usually a subduction zone: a trench where an ocean plate is being shoved back into the mantle. This constant process of creating new ocean crust and destroying old ocean crust means that the oldest ocean crust on Earth today is only about 200 million years old. In contrast, the
The Core The Core The Core is a 2003 American science fiction disaster film directed by Jon Amiel and starring Aaron Eckhart, Hilary Swank, Delroy Lindo, Stanley Tucci, Tchéky Karyo, DJ Qualls, Bruce Greenwood and Alfre Woodard. The film focuses on a team whose mission is to drill to the center of the Earth and set off a series of nuclear explosions in order to restart the rotation of the Earth's core. The film was released on March 28, 2003 by Paramount Pictures. Geophysicist Dr. Josh Keyes (Aaron Eckhart) and scientists Dr. Serge Leveque (Tchéky Karyo) and Dr. Conrad Zimsky (Stanley Tucci)