Assignment1 - To:Ms.LauraBuchanan,GSICE70...

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To: Ms. Laura Buchanan, GSI CE 70 From: Miguel De Gracia 19481379 Subject: Assignment #1, CE 70 Assignment #1 Question #1: Explain  how  the  Plate Tectonics   theory  fits  within   the  current  model of  the  structure of the Earth. Plate tectonics theory is based on evidence of rock type  distributions,  continental  shapes, biological distributions, and earthquake  and volcano distributions, magnetic  anomaly distributions. Similar rock type distributions and biological distributions have  been found in different continents. These similar findings in areas a long distance from  each other leads to the assumption that the continents were a big land mass, Pangaea.  This assumption also comes from the visual evidence that the continents seem to fit  with each other. Such a statement also explains the biological and rock distribution  across continents. The earthquake and volcano distributions demonstrate where the 
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ridges of the plates come into contact with each other and explain the huge force  exerted in an earthquake. The magnetic anomaly distribution is the measure of the  magnetic field which goes along the mid-ocean ridge. Question #2: Pick any location on the Earth, could be where your ancestors came from or a  place   you  visited   or   would   love   to  visit,   and   identify   the   principal   geologic  hazards on relative position to plate boundaries. I will be describing the geologic hazards from where I am from, Panama. In Panama we  find a convergent boundary in which the oceanic lithosphere goes underneath the  continental crust. In this region we have the collision of three different tectonic plates,  the South American plate, the Nazca plate, and the Cocos plate. Such collisions among  these plates lead to earthquakes and the formation of volcanoes. These volcanoes are  known to be explosive and produce a lot of tephra. In Panama, I visited a few volcanoes  in a city in which my family resides, Volcan Baru. The name itself implies the geologic 
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This note was uploaded on 02/18/2010 for the course ENGINEERIN 7 taught by Professor Patzek during the Spring '08 term at University of California, Berkeley.

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Assignment1 - To:Ms.LauraBuchanan,GSICE70...

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