Mt Helen

What happened to the HISTORY stand up St . Helens , located in southwestern chapiter about 50 miles northeast of Portland , Oregon , is unrivalled of many vol digestic peaks that loom the descend Range of the peace-loving Northwest the range ex functions from fool Garibaldi in British Columbia , Canada , to Lassen Peak in northern California . Geologists rallying cry scope St . Helens a composite vent (or stratovol good dealo , a marge for steep sided , often rhombohedral cones constructed of alternate(a) layers of lava flows , ash , and other volcanic debris . Composite volcanoes tend to erupt explosively and simulate considerable danger to nigh life and proportion . In contrast , the gently slant shield volcanoes , such as those in Hawaii , typically erupt xplosively , producing fluid lavas that can flow great dista nces from the industrious vents . Although Hawaiian-type gusts may destroy property they rarely cause ending or injury . ahead 1980 , snow-capped , grace all-encompassingy symmetrical Mount St . Helens was known as the Fujiyama of America Mount St . Helens , other active Cascade volcanoes , and those of Alaska form the North American segment of the circum-Pacific Ring of move a notorious zone that produces frequent , often cataclysmal , earthquake and volcanic action at law (1Basic DataLocation : southerly central Washington State (Cowlitz County . Latitude 46 ?20 N Longitude : 122 ?18 WType : HYPERLINK http /vulcan .wr .usgs .gov /Glossary /StratoVolcano / fabric .html StratovolcanoSize comparison : Mt . St . Helens is the smallest of the five major volcanoes in Washington State , and similarly the youngest of these . It s last eruption was 123 years earlierElevation : 9 ,677 feet before 8 ,363 feet after 1 ,314 feet removedMain Eruption : whitethorn 18 , 1980 , 8 :3 2 a .

m (Pacific timePyroclastic flow animate : at least 300 miles per hour ( round material travelled much fasterPyroclastic flow temperature : As high as 1 ,300 degrees F (700 degrees C ) Energy released : 24 megatons thermal dexterity (7 by blast , rest through release of confuse 50 times more powerful than the Hiroshima atomic blastLandslide incite out : The landslide is the World s largest recorded progeny EVERAsh intoxicate summit : Reached about 80 ,000 feet in less than 15 minutesAsh stain dispersal : Spread across U .S . in 3 days circled Earth in 15 daysDeaths : At least 60-65 persons , and thousands of animals , birds , and insects (2On May 18 , 19 80 , at 8 :32 a .m . Pacific Daylight Time , a magnitude 5 .1 earthquake shook Mount St . Helens , releasing an vast stop of energy , instantly transforming a peaceful wilderness into a hellish landscape . As soon as the eruption was over , the process of rebirth and renewal began . The great deal is quench in the spotlight after 20 years observe and chat the story of this amazing wonder of character in this commemorative of the anniversary of the day that chaos reignedOctober 1 , 2004 : Mount St . Helens Activity Increases . We probably will not see an event to match the 1980 eruptions of this now-famous volcano but recent drill has step up and researchers are watching closelyWhat did we learn from itWe can learn some facts...If you want to get a full essay, order it on our website: OrderCustomPaper.com

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