Mount St. Helens lies on a Convergent boundary plate. These are the most geologically active plate, the mountain lies mainly on the Continental crust of the Convergent boundary plate. Mount St. Helens is 8,366' or 2,550 m high. The radius of Mount St. Helens is about 6 km at the base, and the elevation of the base is about 1 km above sea level. Before the eruption of May, 1980, the elevation at the top of Mount St. Helens was about 3 km.
Sicily, Italy 37.73 North, 15.00 East, summit elevation 3350 meters Shield volcano Mt. Etna is the largest active volcano in Europe. It has an elliptical base (38 x 47 km) and a maximum elevation of about 3350 meters. The volcano dominates the landscape of North-East Sicily, Italy. John Seach at summit of Mt.
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
Science is showing that the potential for an eruption of some of the earth’s biggest and deadliest volcanoes is very real and imminent. In order to understand why volcanoes are deadly, one must know what causes volcanoes to erupt. Deep down in the earth’s crust or mantle there is melting occurring. This heat is coming from the earth’s core and the constantly moving materials within the earth. When parts of the mantle or crust melt, magma is formed.
Mount Vesuvius (Italian: Monte Vesuvio, Latin: Mons Vesuvius) is a stratovolcano in the Gulf of Naples, Italy, about 9 kilometres (5.6 mi) east of Naples and a short distance from the shore. It is the only volcano on the European mainland to have erupted within the last hundred years, although it is not currently erupting. The two other major active volcanoes in Italy, Etna and Stromboli, are located on the islands of Sicily and Stromboli respectively. Mount Vesuvius is best known for its eruption in AD 79 that led to the burying and destruction of the Roman cities of Pompeii and Herculaneum. They were never rebuilt, although surviving townspeople and probably looters did undertake extensive salvage work after the destructions.
Easter Island Easter Island is a Polynesian Island located in the South Pacific, part of the Polynesian Triangle. It was formed by a group of massive volcanic eruption. It’s a little island, with the area about 63 square miles. Easter Island is one of the most remote places in the world, when the first people found the island there were few resources. One person who discovered the island was Admiral Roggeveen a European on Easter Sunday 1722.
Mount St. Helens is a volcanic mountain in the Cascade Range in North America, in the state of Washington. It is, perhaps, the most famous mountain in the range, and certainly is the most active volcano in the area today. In fact, it has probably been the most active of the Cascade volcanoes for over 4000 years. On May 18th, 1980, the mountain erupted. Becoming one the largest volcanic eruptions in U.S history.
The underwater mountains of the ridge may not be more than two miles higher than the surrounding sea floor. On the whole, sea-floor spreading is basically volcanic, but it is
Using the history of eruptions allows us to assess what is likely to happen in the future, for example, in the eruption of Mt. St. Helens in 1980 the volcano erupted on its side from a large bulge this left a huge crater as seen in the image. Because of this deep crater we know that neither a large debris avalanche nor a major lateral blast will like happen again. Mt. St. Helens is a very closely monitored volcano due to its previous eruptions.
Haiti is on the boundary of the Caribbean and North American plates and is an example of a conservative plate boundary. Volcanic eruptions are also one the greatest threats among the natural hazards. The active land, volcanoes of the world occupy are only 0.6% of the total land area. Most volcanoes are spread along the coast, in areas that are also earthquake zones. Mid-ocean volcanic ridges are formed where the ocean floors split and move apart.