Earthquakes and Logarithms Earthquakes are responsible for a wast majority of natural hazards on our planet. This natural geological phenomena are almost impossible to predict‚ and they occur usually in zones of the planet that are prone to movement in the uppermost crust of the earth. Certain areas are more likely to experience earthquakes‚ and also the aftermath of the earthquakes can be just as destructive or sometimes even more. Different methods of measuring earthquakes have been implemented
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an hour. 3. FORMATION OF THE SWISS ALPS The Swiss Alps are a mountain range formed by the convergence and collision of the European and African tectonic plates approximately 100 million years ago. As a result of this collision‚ the Tethys Ocean basin gets pushed upward by the African tectonic plate and into the Eurasian tectonic plate. The bottom of the Tethys Sea experiences enormous pressures‚
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ridge. Radioactive decay in Earth’s mantle causes convection cycles‚ which drive plate tectonics. Hot mantle rises and undergoes decompression melt due to change in pressure. New oceanic crust is created in a characteristic sequence. Studies of Ophiolites show a sequence of sediment‚ pillow basalts‚ sheeted dikes‚ and gabbro being formed as hot mantle rises and creates new crust at ridges. The theory of plate tectonics is greatly supported by discoveries made at mid-oceanic ridges. INTRODUCTION
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inside. As the liquid moves‚ the crust moves with it‚ the tectonics plates move with it‚ causing the continents to move with it too. Figure 1: Supercontinent Pangaea PROOF Among
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has been slowly accumulating. The earth is made up of tectonic plates these are massive slabs of rock floating on magma ‚as the plates move about‚ they spread apart‚ collide‚ or slide past each other‚ This is the main cause of volcanoes and earthquakes Earthquakes occur in many regions all over the world in some regions they occur more frequently and severely than in others (depending on the location)‚ the main cause of earthquakes is tectonic plates grinding against each other ‚ therefore earthquakes
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Plate tectonics are responsible for many of Earth’s natural occurrences. From volcanoes to earthquakes plate tectonics play are large role. Another natural occurrence that is not is discussed as much as volcanoes and earthquakes is the formation of sedimentary rock. Plate tectonics also plays a major role in the formation of this type of rock. Plate tectonics is a term that is used to describe how the different plates that make up the Earth move and the reactions that occur as they are moving
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Quiz 4 1. The idea proposed by Alfred Wegener to explain the continental shapes and positions is known as _____. A) Pangaea B) plate tectonics C) continental drift D) rift valley E) sea floor spreading 2. In the diagram below‚ which two are the best examples of different continental positions in the past? A) North America – South America B) North America – Africa C) South America – Asia D) Europe – North America E) South America – Africa 3. According to Wegener’s model‚ what evidence
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searching and discovered that the earth’s tectonic plates are in constant motion. Two plates get stuck together where they meet (FAULTS) but forces deep within the earth drag and pull down the plates in different directions. Stuck together for so many years the stain gets too much‚ which then an earthquake can occur. After reading about earthquakes I had one scientific term that I did not get. That term was "Tectonic Plates"‚ all I really know about Tectonic Plates is that they are underground. I needed
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major breakthrough was the plate tectonic paradigm‚ which allowed basins to be classified according to a unifying geodynamic theory. The driving mechanisms of subsidence are ultimately related to processes within the relatively rigid‚ cooled thermal boundary layer of the Earth known as the lithosphere. The lithosphere is composed of a number of tectonic plates that are in relative motion with one another. The relative motion produces deformation concentrated along plate boundaries which are of three
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the deadly pyroclastic flows and ash explosions well known to it. A volcano is a mountain with a vent at the top where magma and gasses from the earth’s Mantle erupt on the earths crust and turn into lava caused by the movement of the tectonic plates. Tectonic plates are big pieces of the lithosphere that
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