Katla Iceland is called the land of ice and fire. It is formed by the divergent plate boundary between the North American and Eurasian tectonic plates. Spanning the Mid-Atlantic Ridge‚ Iceland emerged as a result of the divergent process; the results of which‚ can be measured and observed on land. About the size of the State of Virginia‚ with a population of around 300‚000. Iceland has 30 volcanoes and 13 of them are active. The most fatal volcanic eruption of Iceland’s history was the Skaftáreldar
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Undara Lava tubes consist of a lava field remaining from a massive volcanic eruption of Mt Undara which occurred 190‚000 years ago. During the Cenozoic‚ there was wide spread igneous activity in Eastern Australia. Volcanism commenced in the late Cretaceous (approximately 70 Ma) and continued through the Cenozoic. The cenozoic is the current geological era. It began 66 million years ago and continues today. About 23.3 km³ of lava flowed from the Mt Undara volcano at an estimated rate of 1000 m³ a
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Impact Approximately 57 deaths‚ about $1.1 billion in property damage; caused a partial collapse of the volcano’s flank‚ deposited ash in eleven states and five Canadian provinces. With no immediate precursors‚ a magnitude 5.1 earthquake occurred and was accompanied by a rapid series of events. Mount St. Helens produces small to large explosive eruptions‚ which send varying quantities of ash and tephra into the atmosphere Tephra (rock fragments and particles ejected by a volcanic eruption
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Me and My Volcano Volcanoes exist all around the world. They can be very dangerous or unharmful. Some may seem unharmful because of their appearance‚ but they really are harmful to humans and wildlife. Volcanoes occur when two tectonic plates collide or‚ when there is a hot spot in the crust and constructive forces build a volcano. There are two types of volcanic flows pyroclastic and mud flows. Pyroclastic volcanoes occur when the amount of magma in the chamber collects and the pressure
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Me and My Volcano Volcanoes exist all around the world. There are three types of volcanoes‚ they are shield volcano‚ cinder cone volcano and a composite volcano. A volcano is a place where ash‚ gases‚ and molten material rock from deep underground erupt to the surface. Lava comes out of a vent ‚ then it turns into a lava flow. When external waters‚ such as groundwater ‚ mixes with magma and then it turns into steam. The violence of an eruption depends on the amount of gas that was dissolved
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Mount Fuji Imagine arriving home from a very long trip‚ waiting to go relax and sleep in your precious home. When the home sweet home you realize is covered in volcanic ash and half of your house is destroyed by lava. Many citizens living near Mount Fuji could have lived in constant fear hoping that Mount Fuji wouldn’t erupt. Its last eruption was December 16‚ 1707- January 1‚ 1708 still an active volcano today. Mount fuji was present about 10‚000 years ago. Mount Fuji is a symbol of
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Pompeii was a great city in ancient Rome that was abruptly destroyed when the seemingly harmless and docile Mt. Vesuvius unexpectedly erupted destroying the city of Pompeii and the bordering city of Herculaneum. Before this tragedy struck Pompeii was a very wealthy city and a staple of Roman culture. Located just 10 Kilometers from Mount Vesuvius‚ Pompeii appeared to be nothing more than a wealthy city with a view of great mountain until its one defining moment in history changed everything. Where
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Grímsvötn volcano is located near the center of the Vatnajökull ice cap in central Iceland. At a height of 5658 feet‚ it has the highest eruption frequency of all the volcanoes in Iceland. Grímsvötn volcano has a complex of calderas‚ of about six by eight kilometers in area‚ and a subglacial caldera lake sustained by geothermal heat. A caldera‚ a large‚ circular depression at the summit of a volcano‚ is formed when magma is withdrawn or erupted from a shallow underground magma reservoir. The caldera
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You can hike‚ kayak‚ and canoe here. You can fish waist-deep in rivers as clear as glass. And you can watch the best fish catcher of all‚ the great Alaskan brown bear‚ sometimes diving completely under the water for its prey‚ sometimes catching fish in midair. At the end of the day you can relax in a rustic yet sumptuous lodge on the shore of a sapphire lake and recount the day’s enchantments. In 1912 a volcano here erupted with a force ten times that of Mount St. Helens in 1980. Suddenly news of
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One hundred twenty-two years ago‚ one of the most destructive powers of Nature was felt around the globe. This power was from the explosion of Krakatoa‚ an island volcano that lies in the Sunda Strait. The scientists of the time struggled to comprehend the destruction that resulted from this great explosion. The results from the examination of the destruction established a landmark in learning about volcanoes. But let us back up a bit and learn exactly what happened before the Great Explosion
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