Slide 1

Mount Saint HelensGrant and Michael 8-2 2010

LocationPlate BoundariesHemisphereType of MagmaNorth American and Juan de Fuca PlateNorth America WashingtonYakimaNorthwest HemisphereGranitic and Andesitic

StratovolcanoIt has very violent eruptions.Force is compared to Atomic BombIt was a paroxysmal volcanoHeight before eruption9,677 feetAfter8,636 feet

The Bulge

Most Damaging EruptionHistoryMay 18, 1980

Video of Explosion

Few eruptions in 2004Formed 2,200 years agoEffects of VolcanoThousand of acres of timber destroyedBridges and Roads Destroyed62 people killedYakima, Washington was the worstBusinesses and schools closed down7Damage Caused

Interesting FactsHarry Truman died there because he refused to leave his home.The ash that was produced circled the Earth in 15 days.Caused the largest landslide in history.Some areas were covered by 600 feet of mud.It leveled 4 billion feet of useable timber.

The AftermathIt provided us with Geothermal energyValuable mineralsFertile soil Recreational opportunities.

Thanks For Watching!!!!!BibliographyA.Smith, Valerie. http://www.olywa.net. 6 June 2006. 1 December 2010 .Boise State University. http://www.boisestate.edu. n/a n/a 2010. 1 December 2010 .Discovery Education. http://player.discoveryeducation.com. n/a n/a 2010. 1 December 2010 .Topinka, Lyn. http://vulcan.wr.usgs.gov. 10 March 2010. 2 December 2010 .United States Search and Rescue Task Force. http://www.ussartf.org/. 24 November 2010. 1 December 2010 .USGS. http://pubs.usgs.gov/publications/text/slabs.html. n/a February 1996. 1 December 2010 .St. Helens Funny Song/ November 8, 2006/ You Tube/ Web/ December 6, 2010Mount St. Helens Erupting/ May 19, 2006/ You Tube/ Web/ December 6, 2010