Earthquakes and Volanoes

-Amrita Volcanoes and earthquakes are seemingly very different geological events, up to now they are actually closely re recentlyd two go forth from drawments of Earths crust. Earths crust the lithosphere is composed of several study plates and many an mated(prenominal) minor plates that change shape and position. Over time, these architectonic plates move, act with each former(a), and are responsible for the formation of marine 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 raise up similarities in rocks and fossils found on continents separated by large-minded 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 within Earth could provide ample force to secernate and move continents. By the late 1960s, evidence of seafloor spreading helped to blaspheme the now well-accepted theory of plate tectonics. Three main types of boundaries comprise between tectonic plates. The first, called a divergent boundary, occurs most a good deal 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 gimcrack type, called a convergent boundary, occurs where two plates moving toward each other meet. If a t least one of the plates is made up of rela! tively dense oceanic crust, the denser of the two plates subducts, or lantern playground slides beneath the other. If two plates are made up of continental crust, very little subduction occurs. Instead, the plates buckle and fold to create valleys, ridges, and high mountain ranges. The demise type of boundary is called a transform boundary. At these locations, plates slide roughly alongside each other in antagonist directions. The plates often get stuck as...If you want to get a turn out essay, order it on our website: OrderCustomPaper.com

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