Crust (geology) only planet in our Solar System with plate tectonics. The crust is a thin shell on the outside of the Earth, accounting for less than 1% of Earth's volume. It is the top component of lithosphere: a division of Earth's layers that includes the crust and the upper part of the mantle. The lithosphere is broken into tectonic plates that move, allowing heat to escape from the interior of the Earth into space. The crust lies on top of the mantle, a configuration that is stable because the upper mantle is made of peridotite and so is significantly denser than
Ashton (given name) Ashton (given name) Ashton is a given name derived from an English surname derived from a place name meaning "ash tree town." The name is in use for both boys and girls in the United States. Ashton was used far more often on American females from years 1986–1997. The popularity for girls was from the Terri Garber character "Ashton Main" on 1985's North and South (miniseries). Since Ashton Kutcher's debut on television and film in the late 1990s, the name is now in favor more for boys, as it was always before 1986. Ashton was the 124th most popular name