The tremendous eruption of Mount Tambora in April 1815 was the most powerful volcanic eruption of the 19th century. The eruption and the tsunamis it triggered killed tens of thousands of people. And the magnitude of the explosion is difficult to fathom. It has been estimated that Mount Tambora stood approximately 12,000 feet tall before the 1815 eruption, and the top 4,000 feet of the mountain was completely obliterated. Adding to the disaster's massive scale, the huge amount of dust blasted into the upper atmosphere by the Tambora eruption contributed to a bizarre and highly destructive weather event the following year.
The epicentre was a town named Leogane; about 19km (12 miles) west of Port-au-Prince, thousands were left homeless and up to 80-90% of buildings in Leogane were destroyed. The quake was quickly followed by two strong aftershocks of 5.9 and 5.5 magnitudes. It was the worst earthquake to hit the Caribbean island in 2 centuries. The island lies on the Enriquilla-Plantain Garden Fault however it was caused by an interaction between the North American and Caribbean Plates. After which the barely noticed island became the centre of the world’s news channels, it became one of the most noticed natural disasters in history with celebrities and normal people alike doing allsorts to raise money and aid for the victims of the quake.
The oldest ash deposits were erupted at least 40,000 years ago onto an eroded surface that's still older volcanic and sedimentary rocks. Intermittent volcanism continued after the glaciers disappeared, and nine main pulses of pre-1980 volcanic activity have been recognized. Two months before the big explosion there was a 4.1 magnitude earthquake that hit underneath Mount Saint Helens, then seven days after that a 250 foot hole was in the mountain and released a plume of ash. The entire area was evacuated. Then on May 18, 1980 it happened, 57 people were killed, over 7,000 animals were killed as well.
1 The island is volcanic in its origin and home to three extinct volcanoes. It had rolling hills and a forests of giant palms which towered to heights of over 100'. 2 The first
In this essay I will explain the rock that the natural wonder of Easter Island contains. Its located in Chile, 30 00 S, 71 00 W. Located 2200 miles due west of Chile and 1200 miles east of Pitcairn Island, is a sixty-three square mile island formed eons ago by two volcanoes. Because a Dutch seaman, Jacob Roggeveen, came upon it on Easter Day, 1722, we know it on our maps as Easter Island. Rich as the natural resources were, over-population, probably, resulted in their substantial depletion. Pollen records indicate the forests were endangered by 800 AD and likely disappeared in the 1400's.
Professor Marinatos was the first to suggest in 1939 that the eruption of Thera, was the cause for the devastation. His theory argued that the earthquakes destroyed the palaces, tsunamis eradicated the Minoans, and the ash from Thera covered the whole island destroying crops and killing animals. Many geologists argue that the effects described by Marinatos were possible. Others disagree. New information from D, M, Pyle placed the majority of the ash of the volcano to the East, with little effect upon the island of Crete.
One person who discovered the island was Admiral Roggeveen a European on Easter Sunday 1722. The island is volcanic since it had been formed by a volcanic eruption and has three volcanoes present on it, but they were extinct before Polynesian settlers arrived. There are no fresh water sources except one lake that had formed inside the extinct volcanoes. Due to the islands remoteness and
Mount Rainier, Magnificent and Mysterious ENG121: English Composition I Mount Rainier, Magnificent and Mysterious Mount Vesuvius destroyed Pompeii in a matter of hours. Millions of tons of rock and ash fell on the city. When things finally calmed down, Pompeii is buried under one to two feet of rock and the city is all but wiped from the face of the Earth (Tarshis, 2013). What would it have been like to live near Mount Vesuvius before it erupted? I believe it would have been magnificent.
Mid-ocean volcanic ridges are formed where the ocean floors split and move apart. Hawaii have followed a different pattern, forming from magma released from individual hotspots in the mantle. The inner parts of the continents have few volcanoes, almost all the land volcanoes are located on are less than 100 km from the coast. An example of this is Mount Pinatubo, which is located roughly 100km from the coast in the Philippines. Tornados are also unevenly spread.
9, 000 of those being foreigners. The Tsunami’s energy was so great the wave traveled around the world three times. Seven years later in 2011 an earthquake 60km off the east coast of Tohoku with a magnitude of 9.0 on the Richter scale struck Japan. The earthquake triggered a huge Tsunami which reached heights of 133 ft. and killed around 15, 839 people, injured 5950 and left 3642 unaccounted for. Causes When a dense oceanic plate collides with a less dense continental plate the denser oceanic plate subducts under the less dense continental plate.