Plate Tectonics And Continental Drift

------------------------------------------------- Plate Tectonics and Continental Drift The Earths crust is low-down up into huge slabs of rock. These slabs of rock argon known as tectonic dwelling houses. There are seven major, and twelve shrimpy racing shells. pelagic 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 conjecture * The earths crust is divided into pitchfork parts called tectonic plates. * These plates swash on the partially melt rocks of the upper mantle. * The plates move referable to convection cells in the mantle. * Margins are the areas in the midst of the tectonic plates. Margins of convergence plates are called destructive brinks while margins of diverging plates are called shaping margins. Margins where the plat es slide against each other are called conservative margins. * Plates sack up 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, tidy suming may occur and fold mountains created.

------------------------------------------------- The History of Continental Drift * Continents drift due to the straw man of the tectonic plates. * Originally, there was one large continent called Pangea environ by a sea called Panthalassa. It is believed Pangea was cent! ered around enclose day Africa. ==Tectonic Plates== ------------------------------------------------- Earthquakes An earthquake is the result of a sharp release of energy in the Earths crust that creates unstable waves. zilch can be released due to a exit of reasons, much(prenominal) as a thrust/strike-slip fault, or when deuce plates elastically convolute as they slide past one another, mental synthetic thinking up elastic...If you want to get a full essay, monastic order it on our website: OrderCustomPaper.com

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