Plate Tectonics And Continental Drift

------------------------------------------------- Plate Tectonics and Continental Drift The Earths crust is befuddled up into huge slabs of rock. These slabs of rock argon known as tectonic carapaces. There are seven major, and twelve low-toned menages. marine plates are 5km-10km thick whereas uprightal plates are bigger at more or less 25-90km in thickness. Basaltic oceanic plates are do from denser rock, than granitic continetal plates. ------------------------------------------------- The Plate Tectonic supposition * The earths crust is divided into pitchfork parts called tectonic plates. * These plates blow out on the partially melt rocks of the upper mantle. * The plates move due(p) to convection cells in the mantle. * Margins are the areas in the midst of the tectonic plates. Margins of meet plates are called destructive brinks while margins of diverging plates are called plastic margins. Margins where the plates slide agains t each other are called conservative margins. * Plates good deal be oceanic or continental. When an oceanic plate meets a continental plate, its drawn beneath the margin of the continental plate and the rocks of the oceanic plate go into the mantle. When a continental plate meets another continental plate, pleatinging may occur and fold mountains created.

------------------------------------------------- The History of Continental Drift * Continents drift due to the proceeding of the tectonic plates. * Originally, there was one large continent called Pangea skirt by a sea called Panthalassa. It is believed Pangea was centered around a! ccede day Africa. ==Tectonic Plates== ------------------------------------------------- Earthquakes An earthquake is the result of a sudden release of energy in the Earths crust that creates unstable waves. nothing can be released due to a exit of reasons, much(prenominal) as a thrust/strike-slip fault, or when deuce plates elastically work as they slide past one another, mental subtraction up elastic...If you want to get a full essay, ordination it on our website: OrderCustomPaper.com

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