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
Given name Chinese, Singapore, and Vietnam, among others), as well as in Southern and North-Eastern parts of India, and in Hungary. This order is common also in Austria and Bavaria, and in France, Belgium, Greece and Italy, possibly because of the influence of bureaucracy, which commonly puts the family name before the given name. In China and Korea, part of the given name may be shared among all members of a given generation within a family and extended family or families, in order to differentiate those generations from other generations. The order "given name – father's family name – mother's family name"