Lithosphere (Crust) is the outermost layer has a thickness of between 6-35 kilometers, divided into two parts by the thickness of the crust, called the lithosphere and upper (Upper crust) has a lower density. Contains potassium and calcium aluminum silicate majority. It is known that this class Al (sial) Thinnest part called the lower crust (Lower crust) with a density greater than the upper section. Consisting of magnesium, iron and calcium silicate majority. Known as the premier Masai (Sima) of continental crust consists of Syed Al and Masai. The thickness of the Antarctic Ocean. The web site, which layer only.