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Where is Mount St Helens?

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Introduction

Where is Mount St Helens? Mount St Helens is located in the Cascade Mountains in the North-West of the USA. For over one hundered and twenty years the volcano lay sleeping until 18th May 1980, the most destructive eruption for sixty years left people shocked. What was it Like Before the Eruption? Before the eruption the Mount St Helens area was beautiful. It was a national park, a snowy mountain with spirit lake at its foot surrounded by s lush forest. Although most people had forgotten or were unaware that it was a live volcano the area was still sparsely populated. What Caused the Eruption? The eruption was caused by an oceanic plate, the Juan de Fuca plate, sliding under an continental plate, North American Plate. ...read more.

Middle

On the 30th of March there was a steam cloud being ejected from the volcano. By the 17th of May other minor earthquakes begin, it is thaught that these were caused by the movement of magma and gas. All roads in a twenty mile radius around the volcano were closed as these events were proving to be quite a tourist attraction. A bulge had been growing on the north side of the volcano, it was one 100m high and 2km in diameter. This is called a kryptodome, a chamber of magma, since the magma had been blocked in its usual route it had been diverted to the north side of the volcano but it couldn't escape there so it kept flowing into the kryptodome making it expand and grow. ...read more.

Conclusion

By early June the ash cloud had blown all round the world. What were the Effects on People? Few people were killed because the area had been evacuated as a result of monoriting of the volcano. Even with the evacuation in place 63 people died mostly from the poisionus gasses. All vegetation for a distance of 21km north of the volcano was flattened. The loggers' livelihood was destroyed, but later 10 million trees were re-planted. The livestock and crops local farmers was lost but over time the soil became more furtile. Most communications were down, for example flooding washed away roads and railway btidges. Many fish died by river pollution and a sudden rise in temperature. The Tourism industry grew, in 1993 a tourist centre was set up and Mount St Helens now attracts over 1million tourists a year. ...read more.

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