Earthquakes and Volanoes

-Amrita Volcanoes and earthquakes are seemingly very different geological events, hitherto they are actually closely re latishd two go forth from motionments of Earths crust. Earths crust the lithosphere is composed of several major plates and many an mated(prenominal) minor plates that change shape and position. Over time, these tectonic plates move, act with each otherwise, and are responsible for the formation of maritime basins, portion ranges, islands, volcanoes, and earthquakes. The theory of plate tectonics is relatively new. In the advance(prenominal) 1900s, Alfred Wegener first developed a theory of continental roll based on a collection of evidence that showed invoke similarities in rocks and fossils found on continents separated by unspecific distances. Sometime later, Arthur Holmes proposed a mechanism to explain how the continents could have move across Earths surface. He proposed that circular convection currents of molten material of late wi thin Earth could provide ample force to break open and move continents. By the late 1960s, evidence of seafloor spreading helped to aver the now well-accepted theory of plate tectonics. Three main types of boundaries body between tectonic plates. The first, called a divergent boundary, occurs most oft at mid-oceanic ridges.

Here, two plates move away from each other, forming a break, or rift, in Earths crust. Magma from the mantle rises to fill the gap, creating new crust. The ostentate type, called a convergent boundary, occurs where two plates moving toward each other meet. If at least one of the plat es is made up of relatively dense oceanic cr! ust, the denser of the two plates subducts, or lantern steals beneath the other. If both plates are made up of continental crust, very small subduction occurs. Instead, the plates buckle and fold to create valleys, ridges, and high mountain ranges. The final result type of boundary is called a transform boundary. At these locations, plates slide roughly alongside each other in opposition directions. The plates often get stuck as...If you want to get a climb up essay, order it on our website: OrderCustomPaper.com

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