June 2011 plate tectonics and associated hazards Comment on the extent to which the features shown in the image support the theory of plate tectonics. To begin with we can see that many of the landmasses appear as separated jigsaw pieces with their complementary shaped coastlines. One example of this is how the North Western coastline of Africa could quite easily ‘slot into’ the North Eastern Coastline of America. This suggests that in the history of the Earth‚ these two land masses were once connected
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Of all terrestrial planets we know of‚ Mercury’s geology is the most unknown. This is because of its closeness to the sun‚ making human observation via spacecraft and from Earth very difficult. There are many craters on Mercury that are made from a particular impact. There is also balsatic rock and plains which are made in the event of a massive volcanic eruption. There are also vents‚ made when a magma chamber collapses. Mercury’s density has produced a solid iron core that accounts for 60% of its
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Chapter One The theory of plate tectonics explains how forces within the planet create landforms. This theory views Earth’s crust as divided into more than a dozen‚ rigid‚ slow-moving plates. Some plates are as large as a quarter of the planet‚ but others are only a few hundred miles across. The plates slowly move across the upper mantle‚ usually less than an inch per year. Scientists use the theory of plate tectonics to explain the long history of Earth’s surface. They believe that about a few
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March 11th 2011. A 500 kilometre-long fault zone was ruptured off the northeast coast of Japan. The epicentre was situated 130 kilometres east from the big city‚ Sendai. The focus occurred at a relatively shallow depth (about 30 km) underneath the Pacific Ocean. The earthquake had the largest magnitude of 9.0‚ which Japan had ever recorded and can only be explained by plate tectonics. As seen in figure 3‚ the earthquake occurred in a subducting zone where the Eurasian plate and the Pacific plate
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German meteorologist Alfred Wegener wasn’t the first to perceive similitude’s right around the landmasses that recommended the landmasses may have once been associated. He began with‚ be that as it may‚ to assemble brainstorms and confirmation into an obvious theory‚ which he transformed into a treatise entitled "The Framing of the Major Emphasizes of the Earth’s outside layer (Landmasses and Seas)." In 1912‚ at experience 32‚ Wegener should have appeared a bald-faced upstart to the regarded parts
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USA. Plates involved: Juan de Fuca plate and the North American Plate. Types of boundary and crust: Oceanic (Juan de Fuca) and Continental (North American) crusts. The margin is destructive‚ also known as a convergent boundary. It’s also a Subduction Zone‚ as the Juan de Fuca plate is subducted under the North American Plate. Warning Signs On March 20th there was a minor earthquake‚ which measured 4.1 on the Richter scale. Tremors happened for the next few days until the 27th of March‚ when
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us a large wave caused by a displacement of a large volume of water. A tsunami are the effect of a natural primary hazards meaning that they are a secondary hazard‚ mostly the result of tectonic activity. The Boxing Day tsunami was caused by the subduction of the indo-Australian plate boundary underneath the Eurasian plate (240km off the coast of Indonesia). In contrast‚ the Japan tsunami was caused by the Pacific Plate subducting under the North American plate. The Asian and the Japan tsunami’s both
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Lecture 1: Introduction Geology - the study of the Earth‚ the processes that shape it‚ and the resources that could be obtained from it. Main branches Physical Geology - deals with the materials that comprise the Earth and the processes that affect it (e.g.‚ Volcanology‚ Seismology‚ Environmental Geology‚ Engineering Geology‚ Mining Geology‚ Petroleum Geology‚ Mineralogy‚ Petrology‚ Geomorphology‚ Geophysics‚ Geochemistry‚ Planetary Geology) Historical Geology - the study of the origin and
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The Dynamic Crust‚ Earthquakes and the Earth’s Interior Why is the Earth’s crust described as being dynamic? Crust- solid rock outer zone of Earth The crust is part of the lithosphere. The Earth’s crust is dynamic which means constantly changing. Earthquakes Volcanoes Crustal movements along fault zones Other evidence indicates that parts of the Earth’s crust have been moving to different locations for billions of years. Describe pieces of evidence that suggest minor changes in the Earth’s
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EAR 105 extra-credit study guide. This is both a study guide and an extra credit assignment worth 10 points on your exam! Using your class notes and the book‚ please answer the following questions with words or with sketches. Use this as a study guide. Remember‚ it will count as extra credit toward your test grade. You may work in groups of 4 or less. If you do work in groups‚ all names go on ONE copy that is handed to me. You may work on separate sheets of paper‚ or answer using this document
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