The Cascade Volcanic Arc

The World’s largest volcano, the super volcano Caldera, is located in the heart of America’s northwest at Yellowstone National Park. This volcano has not erupted for over 640,000 years. Ellie Zolfagharifard, a journalist for Daily Mail, states that if it were to erupt, “the Yellowstone Supervolcano would be one thousand times as powerful as the 1980 Mount St. Helens eruption”.

St.Helens is almost twice the elevation of vesuvius, and “Mt st helens is also almost 23,000 years older than vesuvius. St helens first eruptions of st helens occurred almost 40,000 years ago, and over time those grew into an eruptive series,” this info was according to geology.com. Finally Mount St helens is “exuptive volcanic cone built from over layered ash, pumice, lava flows and volcanic domes and other deposits.” However mount Vesuvius is “part of Campanian Volcanic Arc this is a of line of volcanoes formed over substances zone created by convergence of African and Eurasian

Something beautiful can also be dangerous, as like the darkness can have phenomenal results. Volcanoes are one example of nature’s beauty, they can be fascinating, exciting, magnificent, but they can also be catastrophic. Their hazard eruptions put many lives

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.

A hazard is a situation that poses a level of threat tolife, health, property or environment. The level of hazard posed by different volcanoes can very greatly, from a weak eruption with minimal impact that causes little damage, to a voilent and life threatening explosion. Most of the sixty-plus volcanoes that erupt each year are low risk, however a combination of factors can cause a volcano to be a serious hazard. The factors causing these variations will be explained in this essay.

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

There are over one thousand five hundred volcanoes all around the world, and when they erupt, they spew searing hot lava that changes the surface of the earth. Earthquakes, tsunamis, and volcanoes are just three examples of the many geo-processes that are constantly shaping and changing the Earth.

Albeit no emissions of magma or volcanic cinder have happened for some a large number of years, future ejections are likely. In the following few hundred years, risks will most likely be restricted to continuous fountain and hot-spring action, incidental steam blasts, and moderate to vast quakes. To better comprehend Yellowstone's well of lava and quake risks and to help ensure people in general, the U.s. Geographical Survey, the University of Utah, and Yellowstone National Park structured the Yellowstone Volcano Observatory, which persistently screens movement in the

Introduction Pavlof is one of the most active volcanoes in North America. In the past 100 years, Pavlof has erupted at least 24 times and may have erupted on several other occasions. The remote location and weather with very limited visibility, just a few inhabitants, may and probably have allowed some

Mount St. Helens erupted in Washington, U.S. in 1980. This volcanic eruption was the most destructive volcanoe recorded in the United States (Watson, 1997). The explosive eruption destroyed over 250 square miles of wilderness in the surrounding area (Tarshis, 2016). No trees remained within a six mile area surrounding the volcanoe (Watson, 1997). Just outside of the six miles all trees were blown over and trees on the outer limit were seared (USGS, 2015). Four million board feet of usable timber were destroyed during the catastrophe. As a result of the eruption, 951 million dollars in disaster relief was sent to Washington from the United States government. Also, 200 buildings, 185 miles of highway and 15 miles of railway were destroyed and unusable after the volcanic eruption. The Mount St. Helens eruption also released 900,000 tons of volcanic ash onto the

1980 Eruption Mt. St. Helens erupted on May 18, 1980 and it is said to be the most disastrous volcanic eruption in United States history. There had been months of build up beneath the surface along with a massive bulge growth on the side of the mountain. It began when an earthquake struck beneath the north face of Mt. St. Helens, which set off the biggest landslide to ever happen in the US. Seconds later there was an explosion of the north side of the volcano generating a huge cloud followed by lightning. The large landslide was followed by several lahars (mud flow) and pyroclastic flows (hot gas and volcanic matter).

Volcanos are an amazing destructive force. There are four different types of volcanoes. There is Cinder cone, Stratovolcanoes, Shield volcanoes, and Lava domes. They are vents in the earth that have

In this report, we will talk about Mount St. Helens and how it is related to volcanoes. In the video about Mount St. Helens, geologists let us know why Mount St. Helen’s is the most deadly volcanic blast in the U.S. Mount St. Helens is a large eruptive cone and

Before May 1980, Mount St. Helen in Washington State ha been quiet for over a hundred years. It had been calling "the Fuji of America " because it's symmetrical cone resembled the famous volcano in Japan. It's massive eruption on Sunday, May 20, 980, changed that shape. Mount St. Helens lost 3.7 billion cubic yards of rock. Volcanic ash was send fifteen miles into the air, and very hot winds blew in all directions. Two hundred thirty square miles of forest were flatten. Seventy percent of the snow and ice on the mountain melted, causing an enormous landslide of mud, volcanic ash, rocks, and trees to speeding down the mountain at 500 miles per hour. In the eruption, fifty-seven people lost their lives, some as far away as thirteen miles from the mountain. Most of them were scientists, loggers, and journalists.

Volcanos Volcanos are deadly, can form on islands or mainland, and can destroy mountains and cities. Volcanos commonly form from holes in the earth containing magma. When pressure builds up in these magma chambers, they explode resulting in magma and rock catapulting out into the air. As these