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
Poppy (given name) named for the Flower Fairies illustrations by Cicely Mary Barker. Poppy (given name) Poppy is a feminine given name derived from the name of the flower "poppy", derived from the Old English "popæg" and referring to various species of "Papaver". The name is rising in popularity in the United Kingdom. It was the 13th most popular name given to baby girls in England and Wales in 2016 and was the 43rd most popular name given to baby girls in Scotland. The popularity of the name has been attributed to the naming of Poppy Honey, a daughter of British celebrity chef