Report On Mt St Helens
Allison
Introduction
My report is on Mt. Saint Helens. Before 1980, symmetrical Mt. Saint Helens was known as “Fujiyama of America.” (http://mountsthelens.com/history-1.html) Mt. Saint Helens erupted on May 18, 1980. It was one of the most deadly eruptions in America.
Mt. Saint Helens height used to be 9,677 ft making it the 5th highest peak in Washington. It’s height was reduced to 1,300 ft after it exploded in 1980. Mt. Saint Helens is almost 53 km west of Mt. Adams and approximately 80 km Northeast of Vancouver, Washington. Starting around 3,000 years ago, considerable amounts of basalt and andesite began to erupt as lava flowed between phases of dacite eruptive activity. (http://volcanoes.usgs.gov/volcanoes/st_helens/st_helens_geo_hist_101.html) Mt. Saint Helens started to show signs of life after March 16, 1980. It began with small earthquakes. On March 27, after hundreds of small earthquakes the volcano produced it first eruption in over 100 years. Steam explosions made a 60-70 m wide crater through the volcano’s summit ice cap. …show more content…
Including, the innkeeper Harry R. Truman, photographer Reid Blackburn, and geologist David A. Johnson. (https://en.wikipedia.org/wiki/1980_eruption_of_Mount_St._Helens) Some of the effects of the explosion was the Toutle River got flooded from melting snow and ice from the mountain. About 12 million feet of stockpiled lumber was swept in the river, 8 bridges were destroyed, 200 homes were destroyed or damaged. (http://volcano.oregonstate.edu/what-were-effects-people-when-mt-st-helens-erupted) More than 200 homes were destroyed. Also mores than 185 miles of roads, and 15 miles of railroad was damaged. Ash clogged the sewer system, damaged cars and buildings, and temporary shut down the air traffic in the Northwest. Today Mt. Saint Helens is closely watched along with other mountains in the USA.
Introduction
My report is on Mt. Saint Helens. Before 1980, symmetrical Mt. Saint Helens was known as “Fujiyama of America.” (http://mountsthelens.com/history-1.html) Mt. Saint Helens erupted on May 18, 1980. It was one of the most deadly eruptions in America.
Mt. Saint Helens height used to be 9,677 ft making it the 5th highest peak in Washington. It’s height was reduced to 1,300 ft after it exploded in 1980. Mt. Saint Helens is almost 53 km west of Mt. Adams and approximately 80 km Northeast of Vancouver, Washington. Starting around 3,000 years ago, considerable amounts of basalt and andesite began to erupt as lava flowed between phases of dacite eruptive activity. (http://volcanoes.usgs.gov/volcanoes/st_helens/st_helens_geo_hist_101.html) Mt. Saint Helens started to show signs of life after March 16, 1980. It began with small earthquakes. On March 27, after hundreds of small earthquakes the volcano produced it first eruption in over 100 years. Steam explosions made a 60-70 m wide crater through the volcano’s summit ice cap. …show more content…
Including, the innkeeper Harry R. Truman, photographer Reid Blackburn, and geologist David A. Johnson. (https://en.wikipedia.org/wiki/1980_eruption_of_Mount_St._Helens) Some of the effects of the explosion was the Toutle River got flooded from melting snow and ice from the mountain. About 12 million feet of stockpiled lumber was swept in the river, 8 bridges were destroyed, 200 homes were destroyed or damaged. (http://volcano.oregonstate.edu/what-were-effects-people-when-mt-st-helens-erupted) More than 200 homes were destroyed. Also mores than 185 miles of roads, and 15 miles of railroad was damaged. Ash clogged the sewer system, damaged cars and buildings, and temporary shut down the air traffic in the Northwest. Today Mt. Saint Helens is closely watched along with other mountains in the USA.