Crust (geology) crustal rocks formed before 2.5 billion years ago are located in cratons. Such old continental crust and the underlying mantle asthenosphere are less dense than elsewhere in Earth and so are not readily destroyed by subduction. Formation of new continental crust is linked to periods of intense orogeny; these periods coincide with the formation of the supercontinents such as Rodinia, Pangaea and Gondwana. The crust forms in part by aggregation of island arcs including granite and metamorphic fold belts, and it is preserved in part by depletion of the underlying mantle to form buoyant lithospheric mantle. A theoretical protoplanet named
George (given name) George (given name) George is a widespread masculine given name, derived from the Greek () through the Latin . Its popularity is due to the widespread veneration of the Christian military saint Saint George (George of Lydda, d. 303). The Greek name as given in the Roman era may ultimately derive from the name of Zeus Georgos, an epithet of Zeus in his aspect as the god of crops. Even though the saint has been considered a patron saint of England since the 15th or 16th century, the given name was rarely given in English prior to the accession of