A metamorphic Rock can be formed by simply being under the earth’s surface‚ being exposed to extremely high temperatures and a huge amount of pressure from the layers of rock above. These rocks can be formed by tectonic processes‚ some which include‚ continental collisions (this is a process that causes friction‚ distortion and horizontal pressure). These rocks can also be formed when rock becomes heated rapidly by the intrusion of a hot molten rock‚ (called magma) and it comes from the earth’s interior
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CINDER CONE VOLCANO The cinder cone volcano‚ commonly found in volcanic areas‚ are constructed of rocks and ashes. Gas created from the lava is blown into the air which then “cools and solidifies as small rocks or cinders”. Cinder cone eruptions “take place in basaltic volcanic fields” that immensely effect the human population surrounded by it. Cinder cone eruptions majorly impact the environment by distributing volcanic gases‚ volcanic landslides and blasting tephra. One of the long-term impacts
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Volcanoes are generally not preserved in the geologic rock record as they are usually eroded away. However‚ the various materials erupted from volcanoes are often found preserved in the rock record. From what you have learned about the different types of volcanoes‚ how could you infer what type of volcano erupted in a given area based on the type of volcanic deposits now found as layers of rock? Give specific examples‚ and briefly discuss how some materials may be linked to different types of volcanoes
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Background: • Nevado Del Ruiz is an active stratovolcano located in Colombia. • The volcano lies on the Andean Volcanic Belt which is produced by the subduction of the Nazca plate beneath the South American continental plate. • The volcano has been active for 150‚000 years – the eruption in 1985 is the most recent after being dormant for 69 years. • Eruption: • A rise in seismic activity was first noticed in late 1984‚ and by September 1985 people were warned an eruption was likely‚ with
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On January 23rd 1973 a new volcano unexpectedly erupted in the Vestmannaeyjar archipelago‚ southwest of Iceland. The new volcano was a fissure 1.25 miles long and only 1100 yards from the center of town‚ also named Vestmannaeyjar. The new volcano was named Heimaey. The town was mostly evacuated over the next few days and the lava slowly flowed towards town and the mouth of the harbor for the next seven months. Vestmannaeyjar is the only good harbour in that part of Iceland‚ and was the base for a
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To what extent can preparedness and planning mitigate the effects of volcanic hazards? (40 marks) Volcanic activity happens across the surface of the globe and naturally hazards occur too. A hazard is a situation that poses a level of threat to life‚ health‚ property‚ or environment. It is easy to locate volcanoes‚ but it is very difficult to predict exactly when activity will take place‚ particularly a major eruption‚ this makes it difficult to prepare or plan for one. There is a very big difference
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Away from the coastal resorts the volcanic island of Lanzarote is a natural wonder full of surprises for the intrepid explorer. As you drive up the west coast of Lanzarote on the LZ 2 towards Timanfaya National Park make a left turn onto the LZ 703 as you come to the salt flats at Janubio and continue north towards the town of El Golfo. The scenic LZ 703 hugs the ocean on this part of Lanzarote and has been the backdrop for many a car commercial thanks to the crashing Atlantic waves and the way the
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First‚ we will discuss Mount St. Helens Volcano. Mount St. Helens is a stratovolcano located in the Pacific Northwest of the United States within Washington State. A stratovolcano is also known as a composite cone‚ which is “a large symmetrical structure that consists of alternating layers of explosively erupted cinders and ash interspersed with lava flows (Lutgens‚ 2012.)” Due to the cone shape of the volcano‚ stratovolcanoes are known for creating large explosive eruptions that can eject vast amounts
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INTRODUCTION: The Ring of fire (figure 1) is a horse shoe shaped fault line. This fault line is prone to Earth quakes and volcanic eruptions. The ring of fire Is home to 452 volcanoes and 75% of the worlds dormant and active volcanoes live on the Ring. PLATE TECTONICS Plate tectonics is a theory that the earth is split up in to different areas of the world. They glide on the mantle of the earth the plates act like a hard ridged shell (fig 2 plate tectonics) Some of the plate tectonics move very
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Vesuvius and St. Helens are volcanoes‚ they both erupted . Nonetheless‚ these volcanoes did damage to land and loss of life. Some people even lived by these volcanos‚ it may awesome to live by a volcano‚ or it may be terrifying. Nonetheless‚ if you were to live by a volcano while it was erupting‚ the event would be terrifying from the tremors of a volcano‚ moreover‚ many years ago St. Helens erupted‚ the tremors were horrific‚ people who lived by this volcano were terrified they probably had to
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