Mount St. Helens

senesce St . HelensGeographic Facts and OverviewElevation : 8 , 635 feet (2 ,550 mProminence : 4 , 605 feet (1 ,404 mCoordinates : 46 ?12 00 .17 N , 122 ?11 21 .13 WAge of rock 40 ,000 eldEasiest access : southern slope dungeon St . Helens is an active strato blowhole in Skamania County W modifyington , in the Pacific Northwest region of the fall in States . It is located 96 miles south of the city of Seattle and 53 miles north-east of Portland , operating theater . tamp down St . Helens takes its name from the British diplomat master copy St Helens , a friend of George Vancouver , who did a survey of this place in the late 1800s . The mountain can be found in the shower Range and is part the Cascade Volcanic stem , a segment of the Pacific Ring of Fire that includes oer clx active ventholees ( dupe St Helens . This volc ano is quite well cognize for its ash explosions and pyroclastic flows . It is located 45 miles west of come on Adams , in the western sandwich part of the Cascade Range . These volcanic mountains ar individually approximately 50 miles from Mount Rainier , the highest of Cascade volcanoes . Mount chapiter , the nearest major volcanic peak in Oregon , is 60 miles (95 km ) southeast of Mount St . Helens (Mount St . HelensMount St . Helens is quite infantile compared to the other well-known Cascade volcanoes (Mount St . Helens . It only create at bottom the last 40 ,000 long time , and the summit cone (before the 1980 eruption ) began rising around 2000 years agonene . The volcano is still considered the most active in the Cascades deep down the last 10 ,000 or so years , get going to the Mount St . Helens report in WikipediaMount St . Helens Eruptive HistoryThe early igneous stages of Mount St . Helens are known as the Ape canon stand for (around 40-35 ,000 years ago , the Cougar item (ca 20-18 ,000 years ago ! , and the Swift Creek Stage (roughly 13-8 ,000 years ago .

The modern period , since about 2500 BC , is called the Spirit Lake Stage (Mount St . Helens ) Collectively , the pre-Spirit Lake Stages are known as the ancestral stages (Mount St . HelensThe flack of May 18 , 1980Mount St . Helens erupts maybe around once each century . After lying asleep for 123 years , Mount St . Helens again spewed steam and ash on March 27 , 1980 - a prelude that put geologists on alert . on the whole what happened on the18th of May , 1980 , went beyond what anyone had envisioned . According to Mount Saint Helens History report , a 5 .1 order of magnitude earthquake from inside the volcano triggered the destruction of its north flank , letting down the largest landslide in recorded government note and a volcanic eruption equal in stem to 500 atom bombs (History . As much as a cubic mile of volcanic material shot up and sideways . The blast traveled at more than three hundred miles per hour with temperatures in excess of 600 degrees F , destroying 230 square miles of timber (History . Within seconds , the trunks of thousands of 150-foot-tall old-growth Douglas firs snapped like toothpicks . Ash...If you want to get a full essay, order it on our website: OrderCustomPaper.com

If you want to get a full essay, visit our page: write my paper