leaves off and extends downward to a depth of around 2900 km deep, where the deeper you go, the hotter it gets. The lithosphere is what makes up the tectonic plates. It consists of the crust and that, relatively, cooler part of the upper mantle and extends downward to a depth of around 80 km. The lithosphere is broken apart in to the plates and float around the planet on the more liquid part of the mantle. This movement is what causes Earthquakes and volcanic eruptions. This more fluid part
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SCI/245 January 30, 2011 Stephen Hallin The changing plate interactions and shifting plate junctures, helps us to understand the sedimentary basins. Although plate tectonics is mostly about the horizontal movements of the lithosphere, it also involves large vertical movements which accounts for changes of the crust thickness. Thick sedimentation has to have an initial
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Francisco quake of 1906 and the less serious earthquake of 1989 were both caused by movement along the fault. According to the theory of plate tectonics, the San Andreas results from the abutment of two major plates of the Earth's crust, the Northern Pacific and the North American. Along the fault, the Northern Pacific plate is sliding past the North American plate in a northerly direction, at a relative movement of about 1 cm per year over geologic time, though the rate of movement has been 4 to
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Introduction The Appalachian Mobile Belt is a mountain range that currently extends more than 3,000 kilometers, from Newfoundland, Canada all the way to Alabama in the United States of America. In the past, before the continents separated, the Appalachians also extended into what we know as Europe. The belt primarily consisted of five main orogenies: the Taconian, the Acadian, the Caledonian, the Hercynian, and the Alleghenian orogenies. In this paper, our focus will be the Acadian orogeny. Out
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its southern border the Salmon River. Beyond the Salmon River the Central Coast Range begins (Oregon Coast). The Oregon Coast Range is on a convergent tectonic boundary. The plates involved are the North American Plate and the Juan de Fuca Plate, with Juan de Fuca submerging under the North American Plate (Roering). Along the coast this tectonic setting has caused uplift of the Coast Range across Oregon over the
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occurred at 2:28pm in Sichuan because the pressure resulting from the Indian plate colliding with the Eurasian was sent along the Longmenshan fault line that runs through Sichuan. The earthquake lasted 120 seconds and reached 7.9 on the Richter scale, one of the deadliest to strike China in recent years and its effects were felt as far away as Taiwan, Thailand and Bangladesh. Although the area has a long history of tectonic activity, it seems it was not prepared for an event of this magnitude. With
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occurred at 2:28pm in Sichuan because the pressure resulting from the Indian plate colliding with the Eurasian was sent along the Longmenshan fault line that runs through Sichuan. The earthquake lasted 120 seconds and reached 7.9 on the Richter scale, one of the deadliest to strike China in recent years and its effects were felt as far away as Taiwan, Thailand and Bangladesh. Although the area has a long history of tectonic activity, it seems it was not prepared for an event of this magnitude. With
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with the correct statement describing its formation. (3 point). ❖ Found where the atmosphere or liquid water causes erosion and movement of rock pieces. Metamorphic Formation ❖ Found mostly near convergent tectonic plate boundaries where the P/T condition can be very high. Sedimentary Formation ❖ Found in places where the interior is so hot that rock melts and tehn cools again to form new rock. Igneous
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Introduction Every Californian resident knows what the phrase “The Big One” means: a tremendous earthquake that scientists predict will rock the state of California, which sits on the famous San Andreas Fault line, an 800-mile line of weakness that runs through California. Overland, it runs for 625 miles, running north-south from Point Arena in north San Francisco to the border with Mexico. The most risky stretch of this fault, the southern part, passes about 35 miles from Los Angeles. Being the
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make a tall range of mountains. Sediments from the proto-Atlantic ocean basin and the continental shelf and slope of North America were forced upwards and squished along with the crust. About 400 million years ago, during the Devonian Period, plate tectonics also caused a mountain-building event known as the Acadian Orogeny. In the Acadian Orogeny, Avalonia was crushed between Baltica, modern-day Europe, and proto-North America as they collided and Avalonia accreted onto proto-North America. This
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