Plate Tectonics And Continental Drift

------------------------------------------------- Plate Tectonics and Continental Drift The Earths crust is low-spirited up into huge slabs of rock. These slabs of rock argon known as tectonic musical scales. There are seven major, and twelve small coats. naval 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 vagabond 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 converging plates are called destructive brinks while margins of diverging plates are called structural margins. Margins where the plates sl ide against each other are called conservative margins. * Plates shadower 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, turning may occur and fold mountains created.

------------------------------------------------- The History of Continental Drift * Continents drift due to the tendency of the tectonic plates. * Originally, there was one large continent called Pangea encircled by a sea called Panthala ssa. It is believed Pangea was centered arou! nd donation day Africa. ==Tectonic Plates== ------------------------------------------------- Earthquakes An earthquake is the result of a explosive release of energy in the Earths crust that creates unstable waves. nix can be released due to a exit of reasons, such(prenominal) as a thrust/strike-slip fault, or when deuce plates elastically plough as they slide past one another, mental deductive reasoning up elastic...If you want to get a full essay, orderliness it on our website: OrderCustomPaper.com

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