Irslan Shahid
Professor Glenn
Geology 1303
March 08, 2017
“Mount St. Helens”
Mount St. Helens is an active stratovolcano which is in the Pacific Northwest region of the United States and is located in Washington, Skamania County to be exact. It is a volcano which is very near some major cities including Portland, Oregon and Seattle, Washington. It is in the North American segment of the Pacific called the “Ring of Fire” and this is where the tectonic plates from the “oceanic plate” of the Pacific are forced underneath the “continental plate” of North America.
Age wise, Mount St. Helens is still a young volcano as it was developed only 40,000 years ago and is one of the most active volcanos in the Cascade Range. Just like other volcanoes
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This explosion during March caused two very large craters to open which then turned into one gigantic crater and at the same time a huge bulge on the northern region of the volcano appeared, this grew about six feet every day. Geologists researched the site of the bulge, measured the earthquakes, collected ash and sampled the gases that were released during this period and eventually the bulge grew to three-hundred feet wide and was over a mile in length. At 8:32 AM, on the 18th of May, Mount St. Helens erupted and it was a disaster, the explosion was preceded by thousands of earthquakes during the following two months, which accumulated to a major disaster. The landslide was one of the largest ever to be recorded in history. This may sound like a huge eruption but was not the largest eruption that has occurred by Mount St. Helens, in the year 1480, the eruption is said to be about five times bigger than the one that happened during May of 1980. Mount St. Helens has developed over the past thousands of years due to many eruptions.
Each eruption caused a hot rock called magma from inside earth to be forced out to the surface called lava. Some of the eruptions caused magma that was liquid to flow out lava while at other times the magma was solid bursting out molten rock. Volcanos are essential to life on earth for various reasons like adding
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Get AccessLet’s begin with Mount St. Helens which is located in the pacific northwest of the United States. To be more specific it is located in Washington State and is a part of the Cascade mountain range that spans from California to Canada. It is a composite volcano, which has steep sides that are formed by alternating layers of lava
Volcanoes can be found throughout the entire world and are formed when there is a rupture in the mantle of the Earth's crust. This effect allows the output of volcanic lava, ash, and various types of gases. These tectonic plate breaks are normal, the planet Earth is divided into 17 tectonic plates and consistently move against each other forming shifts from low to high intensity. It can cause displacement of earth or water.
The two Stratovolcanoes, Mt. Vesuvius and St. Helens, have many traits in common. For example, when these two volcanoes erupted, they both made a huge ash cloud. Also, they both began with harmonic tremors, which are small earthquakes, that includes the venting of gases from the magma of volcanoes. Also, they spewed tons of ash and pumice.
Kilauea is a volcano in the Hawaiian Islands it is one of the five shield volcanoes in the Hawaiian language Kilauea means spewing or spreading. Mt St. Helens is an active stratovolcano in Washington it is named after British diplomat lord st Helens.
Volcanoes are one of the most destructive, yet, most beautiful things on Earth. They can make a famous city choke in its own ashes in one day, like Pompeii. Or they can turn a once damaging mountain into a graceful and peaceful home for new life, like Mount St. Helen’s. All volcanoes are unique, and no two are the same. Some erupt differently than others, some look different than others, and all are located in different spots all over the world. I learned this while completing the project and the five volcanoes I researched are examples of my discoveries. The five volcanoes I researched were Mount Hood, Mount Mageik, Long Island, Mount Muria, and Las Pilas.
Bagley, Mary. “Mount St. Helens Eruption: Facts & Information.” LiveScience, Purch, 28 Feb. 2013, www.livescience.com/27553-mount-st-helens-eruption.html
It was May 18th, 1980. The eruption of Mount St. Helens occurred in Washington,United States. The exact time it had happened is at 8:32:17. The eruption happened 96 miles out South of Seattle, Washington and 50 miles northeast of Portland,Oregon. Many people died during this time. About 50 people had died. 250 homes were destroyed. Along with 47 bridges, 15 miles of railways, 185 miles of highway was also destroyed. Many tiny earthquakes had happened a couple days before the eruption had happened.
Re-live the stories of the Lewis and Clark expedition! Packed with well-known stories from America’s past, St. Helens, Oregon is sure to intrigue even the most educated historian. Founded in 1850, St. Helens still works to provide plenty of entertainment for its residents and guests. With rent to own homes available you will definitely want to come join the crowd during the annual Kiwanis parade in June or become a part of the big Annual Celebration in September.
Mount St. Helen is a very active volcano classified as a stratovolcano, stratovolcano is basically a tall volcano built up of layer after layer of hard lava, tephra, pumice, and volcanic ash. Mount St. Helens location is in Skamania County in Washington, with coordinates of 46 12'00.17"N122 11'21.13"W. Mount St Helen is famous because of its catastrophic eruption on May eighteenth in nineteen eighty. The eruption measured a five on the volcanic explosivity index. This is an index created by Chris Newell and Steven Self in the year nineteen eighty-two it was designed to try and measure the explosiveness of volcano eruptions to determine the value of the explosivity and qualitative observations ranging from zero to eight, eight being the
After more then 40,000 years of activity, one would expect that people would no longer live in the surrounding shadow of Mt. St. Helens. But regardless, many towns and cities sit inside of a zone that would face destruction if a large eruption took place. In 1980 Mt. St. Helens erupted and caused the loss of many lives and the destruction of thousands of miles of land and property. Following the eruption, the volcano has stayed extremely active. In 2004 it erupted again, building a new lava dome and sending ash and steam into the atmosphere. Since then, seismologists and volcanologists have recently discovered pockets of magma rising and that another eruption may occur soon. Even though the people of Washington know that an eruption could cause widespread devastation they continue with their lives, doing little to prepare for the potential disaster.
The first historic eruption of Santa Maria was the second largest volcanic eruption in this century. It was the third large explosive eruption in 1902. Mount Pelee and Soufriere of St. Vincent erupted six months earlier.” It also states that “The 1902 eruption of Santa Maria lasted 19 days.” Latitude: 14.76, Longitude: -91.55, Elevation: 3772, Country: Guatemala, Type: Stratovolcano.
Mount St. Helens Location: Washington, United States Latitude: 46.20 N Longitude: 122.18 W height: 2,549 meters or 8,364 feet - 9,677 feet before May 18, 1980 Type: Stratovolcano Number of eruptions in past 200 years: 2-3 Latest Eruptions: Between 1660-1700, around 1800-1802, 1831, 1835, 1842-1844, 1847-1854, 1857, 1980-? Present thermal activity: strong steaming Nickname: Mount Fuji of the West Remarks: continuous intermittent activity since 1980 with occasional eruptions of steam and ash; occasional pyroclastic flows; intermittent dome forming. MSH is considered a young volcano that developed over the last 40,000 years and is one of the most active volcanoes in the Cascade Range. Geologists predicted that the
Mt St Helen May 18th, 1980 the erosion rose 80,000 feet making ash go to 11 U.S states making snow, ice, and glaciers melt forming volcanic mud slides that reached as far as the columbian river (50 miles to the south east) 57 people died in washington.
The largest eruption that ever happen was the Kulshan caldera. More than 50 km3 of rhyodacite magma exploded from a shallow magma storage region and filled the caldera and surrounding valleys with ignimbrite. That amount of material
First and foremost, this whole mess began around March 20 of that year when an atypical earthquake shook up the mountain range for the first time in hundreds of years. As the days went on, the earthquakes came more often and more rampant. A bulge sprouted on the side of the volcano, growing