Volcanoes have played a key role in forming the face of the earth as we know it today. Some of the most well known landmarks and locations in the world are volcanoes. From the Hawaiian Islands to Mount Vesuvius, the Earth is populated with hundreds of active and dormant volcanoes. Among these volcanoes there are multiple different types. Stratovolcanoes, the most dangerous type of volcanoes, are built by multiple eruptions over many years.
They stretched from the southern tip of South America, along the coast of North America, across the Bering Straight, down through Japan and into New Zealand. What some people did not know is that The Ring of Fire actually has two other names to go along with it. One is called “Circum-Pacific Belt”, and the second is “Pacific Ring of Fire.” Some of the biggest volcanic eruptions has happened along The Ring of Fire. It also, contains some of the largest volcanoes and mountains in the world. One example is Mount Saint Helens.
When it finally does release, it is volatile and is very explosive. Mount Vesuvius is a composite, or strato-volcano, and is the reason it had such a large explosion. Other famous composite volcanoes include the following: Mount Fuji in Japan, Mount Shasta and Lassen in California, Mount Hood in Oregon, Mount St. Helens and Mount Rainier in Washington, and Mt Pinatubo in the Philippines. (Jeffrey Kluger) The final type of volcanic composition is cinder cone volcanoes. Cinder cone volcanoes are different from shield and composite volcanoes because cinder cone volcanoes only grow to about a thousand feet, and they usually erupt from many openings.
According to Universetoday.com it states that there are fifteen different parts of a volcano and they all help a volcano be dangerous. Volcanoes are very dangerous mountains and can destroy everything on earth. Volcanoes still amaze the people living on earth, even though they cause lots of destruction. They cause destruction in all sorts of ways and in all shapes and sizes. Since the beginning of time volcanoes have caused major damage like destroy nature and cities, but even though they cause destruction on earth they still surprise humans.
A series of eruptions over the years have created what we know today as the magnificent Mount Vesuvius. To fully understand the wonders or the dangers of Vesuvius, one must first understand the inner structure and geological evolution of the volcano. Volcanoes are considered to be the Earth’s vents; they allow certain things such as molten rocks, and debris from Earth’s upper mantle to be released on Earth’s surface. Volcanoes get their mountain-like shape because the lava and ash that has been produced year after year collects and hardens. Over 1,000 volcanoes are either considered active, dormant or extinct.
Volcanoes Volcanoes are one of the most destructive yet fascinating geological land forms in our natural environment. They consist of a fissure in the earth's crust above which a cone of volcanic material has accumulated. The cone is formed by the deposition of molten or solid matter that flows from the interior of the earth through an indented vent, called a crater, which is found at the top of the cone. In this report I will discuss different states of volcanic activity, different forms of volcanoes and their properties and locations. Some volcanoes are more active than others.
Volcanoes occur in many different places. Most places volcanoes occur on the edge of the tectonic plates. Volcanoes are formed by the earth’s plates moving closer and closer pushing each other up. Volcanoes are one of the most frightening and dangerous events on earth. A volcano I an opening in earth's crust, by molten rock and gas.Most of the Earth's volcanoes are located around the Pacific Ring of Fire because that the location of most of the Earth's subduction zones.When lava erupts it is made up of a slush of crystals, liquid, and bubbles.
Kilauea is the youngest volcano on the Big Island of Hawaii. Still active, there have been 34 eruptions since 1983. Kilauea is a shield volcano, meaning it covers a wide range of area, and has sloping sides. Kilauea is usually confused as being a smaller part to the neighboring Mauna Loa volcano, but it has it’s own lava flow system which makes it special to the Hawaiian islands. The history of eruptions from Kilauea is lengthy and the volcano’s name actually means, “spewing.” The oldest documented samples of lava date back almost 3,000 years and the oldest human documented eruption happened in 1823.
There are also more explosive volcanic eruptions in which the gas pressure builds until it is extremely high and the viscuous lava can no longer stand i... ... middle of paper ... ...because these volcanoes are located in different areas of the world or because El Nino occured during the year of the eruption of El Chichon. All of these evidences are still being compiled and scrutinized in order to verify the true relation between volcanic eruptions and climate change. Works Cited: Angell, James. "Stratospheric Warming Following Volcanic Eruptions." http://capita.wustl.edu "The Effects of Volcanic Eruptions on Earth's Climate."
Pyroclastic flows have hot ash, rock fragments, and gas in them. These flows of hot ash, rock fragments, and gas are deadly because of their high temperatures of 850° C. Also they a... ... middle of paper ... ...nbsp; Resources USGS "Types of Volcanic Eruptions" Http://pubs.usgs.gov/gip/volc/eruptions.html USGS "MSHNVM and CVO" Http://vulcan.wr.usgs.gov/Volcanoes/MSH/ImageMaps/SWWash/swwash_map.html "MSH Map, Cross-sections, and Time-depth Plot" Http://spike.geophys.washington.edu/SEIS/PNSN/HELENS/mshfigs.html "Simplified Eruptive History of Mount St. Helens" Http://vulcan.wr.usgs.gov/Imgs/Gif/MSH/Graphics/EruptiveHistory/msh_eruptive_stages.gif Edward W. Wolfe and Thomas C. Pierson, 1995, "Volcanic-Hazard Zonation for Mount St. Helens Washington, 1995": USGS Open-File Report 95-497 Http://vulcan.wr.usgs.gov/Volcanoes/MSH/Hazards/OFR95-497/OFR95-497.html "Encart Reference, Volcano, Types of Volcano" © 1993-2000 Microsoft Corporation Http://encarta.msn.com/find/concise.asp?ti=761570122&sid=20#s20 "Volcano," Microsoft® Encarta® Online Encyclopedia 2000 © 1997-2000 Microsoft Corporation Http://encarta.msn.com/find/concise.asp?mod=1&ti=761570122&page=3#s22vb Nas.N