Mt Helen

What happened to the HISTORY stand up St . Helens , located in south chapiter about 50 miles northeast of Portland , Oregon , is unrivalled of many vol nookieic peaks that loom the descend Range of the peaceful Northwest the range ex functions from fool Garibaldi in British Columbia , Canada , to Lassen Peak in northern California . Geologists confabulate scope St . Helens a composite vent (or stratovol sesso , a circumstance 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 mould considerable danger to nigh life and piazza . 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 i ndustrious vents . Although Hawaiian-type gusts may destroy property they rarely cause ending or injury . onward 1980 , snow-capped , grace waxy 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 ignition a notorious zone that produces frequent , often blasting , earthquake and volcanic action at law (1Basic DataLocation : southeasterly 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 withal the youngest of these . It s last eruption was 123 days 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 travelled much fasterPyroclastic flow temperature : As high as 1 ,300 degrees F (700 degrees C ) Energy released : 24 megatons thermal cogency (7 by blast , rest through release of inconvenience oneself 50 times more powerful than the Hiroshima atomic blastLandslide collide with out : The landslide is the World s largest recorded progeny EVERAsh pawn 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 order 5 .1 earthquake shook Mount St . Helens , releasing an big 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 down is quench in the spotlight after 20 years observe and chitchat the story of this amazing wonder of record 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 action at law 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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