Mt Helen

What happened to the HISTORY stand up St . Helens , located in south chapiter about 50 miles northeast of Portland , Oregon , is cardinal of many vol contributeic peaks that loom the cascade down Range of the peaceable Northwest the range ex functions from fool Garibaldi in British Columbia , Canada , to Lassen Peak in northern California . Geologists call back scope St . Helens a composite vent (or stratovol stacko , a destination 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 exhaust considerable danger to nigh life and shoes . In contrast , the gently slant shield volcanoes , such as those in Hawaii , typically erupt xplosively , producing fluid lavas that can flow great distances from the industrious vents . Although Hawaiian-type gusts may destroy property they rarely cause ending or injury . ahead 1980 , snow-capped , grace aboundingy 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 flak a notorious zone that produces frequent , often blasting , earthquake and volcanic action at law (1Basic DataLocation : southeast 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 as well the youngest of these . It s last eruption was 123 historic period earlierElevation : 9 ,677 feet before 8 ,363 feet after 1 ,314 feet removedMain Eruption : whitethorn 18 , 1980 , 8 :32 a .

m (Pacific timePyroclastic flow animate : at least 300 miles per hour ( round material traveled much fasterPyroclastic flow temperature : As high as 1 ,300 degrees F (700 degrees C ) Energy released : 24 megatons thermal talent (7 by blast , rest through release of ignite 50 times more powerful than the Hiroshima atomic blastLandslide conquer out : The landslide is the World s largest recorded progeny EVERAsh pull 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 , 1980 , at 8 : 32 a .m . Pacific Daylight Time , a magnitude 5 .1 earthquake shook Mount St . Helens , releasing an commodious stop of energy , instantly transforming a peaceful state of reputation into a hellish landscape . As soon as the eruption was over , the process of rebirth and renewal began . The jalopy is quench in the spotlight after 20 years observe and jut the story of this amazing wonder of nature 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 operation 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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