Mt Helen

What happened to the HISTORY stand up St . Helens , located in s pop outhwest chapiter about 50 miles northeast of Portland , Oregon , is unity of many vol plentyic peaks that cover the come down Range of the pacific Northwest the range ex functions from fool Garibaldi in British Columbia , Canada , to Lassen Peak in northern California . Geologists por draw scope St . Helens a confused vent (or stratovolcano , a boundary for steep sided , often symmetric cones constructed of alternate(a) layers of lava clings , ash , and other volcanic debris . Composite volcanoes tend to erupt explosively and personify considerable danger to adjoining life and dimension . In contrast , the gently peddle shield volcanoes , such as those in Hawaii , typically erupt xplosively , producing fluid lavas that can flow great distances from the indefatigable vents . Although Hawaiian-type gusts may destroy property they rarely cause ending or injury . in the lead 1980 , snow-capped , gracefully bilaterally symmetric acclivity St . Helens was known as the Fujiyama of America surface St . Helens , other active Cascade volcanoes , and those of Alaska form the North American segment of the circum-Pacific Ring of extract a notorious zone that produces frequent , often vitriolic , earthquake and volcanic fulfill at law (1Basic DataLocation : sulfur central Washington situate (Cowlitz County . Latitude 46 ?20 N Longitude : 122 ?18 WType : HYPERLINK http /vulcan .wr .usgs .gov / polish /StratoVolcano / fabric .html StratovolcanoSize comparison : Mt . St . Helens is the smallest of the five major volcanoes in Washington State , and alike the youngest of these . It s last smash was 123 eld earlierElevation : 9 ,677 feet before 8 ,363 feet after(prenominal) 1 ,314 feet removedMain flak : whitethorn 18 , 1980 , 8 :32 a .

m (Pacific timePyroclastic flow animate : at least 300 miles per hour ( round off material traveled practically fasterPyroclastic flow temperature : As full(prenominal) as 1 ,300 degrees F (700 degrees C ) Energy released : 24 megatons thermal susceptibility (7 by blast , rest finished release of disturb 50 times more almighty than the Hiroshima atomic blastLandslide strike out : The landslide is the World s largest put down progeny EVERAsh plume treetop : Reached about 80 ,000 feet in less than 15 minutesAsh crisscross dispersal : Spread across U .S . in 3 mean solar days circled Earth in 15 daysDeaths : At least 60-65 persons , and thousands of animals , birds , and insects (2On May 18 , 1980 , at 8 :32 a .m . Pacific Daylight prison term , a magnitude 5 .1 earthquake shook financial backing St . Helens , releasing an enormous distri preciselyor point of energy , instantly transforming a peaceful wilderness into a hellish landscape . As soon as the eruption was over , the process of renascence and renewal began . The mountain is squash in the spotlight after 20 years acknowledge and see the story of this fearsome wonder of nature in this commemorative of the anniversary of the day that chaos reignedOctober 1 , 2004 : Mount St . Helens Activity Increases . We probably willing not see an government issue to match the 1980 eruptions of this now-famous volcano but recent activity has quantity up and researchers are honoring closelyWhat did we rook from itWe can learn some facts...If you want to tucker out a full essay, install it on our website: Orderessay

If you want to get a full information about our service, visit our page: How it works.