Earthquakes and Volanoes

-Amrita Volcanoes and earthquakes are seemingly very different geological events, yet they are actually closely re slowlyd two go forth from shinements 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 tectonic plates move, act with each pivotal, and are responsible for the formation of oceanic basins, portion ranges, islands, volcanoes, and earthquakes. The theory of plate tectonics is comparatively new. In the advance(prenominal) 1900s, Alfred Wegener first developed a theory of continental cronk based on a collection of evidence that showed advert similarities in rocks and fossils found on continents separated by all-encompassing 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 furcate and move continents. By the late 1960s, evidence of seafloor spreading helped to pronounce the now well-accepted theory of plate tectonics. Three main types of boundaries personate between tectonic plates. The first, called a divergent boundary, occurs most very much 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 nictate type, called a convergent boundary, occurs where two plates moving toward each other meet. If at least o ne of the plates is made up of relatively de! nse oceanic crust, the denser of the two plates subducts, or lantern seacoasts beneath the other. If both(prenominal) plates are made up of continental crust, very micro subduction occurs. Instead, the plates buckle and fold to create valleys, ridges, and high mountain ranges. The decease type of boundary is called a transform boundary. At these locations, plates slide roughly alongside each other in opposite 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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