Mount St Helens Research Paper

228 Words1 Pages
Have you ever been in a earthquake? Have you ever been around a volcano eruption? I 'm here to tell you about these two natural disaster. I am going to include Mount Saint Helen 1980 eruption and the 1906 San Francisco Earthquake

Mount St. Helens is well-known for its exceeding eruption in 1980, the most cruel and destructive volcanic action ever in U.S.. 57 people were killed, 250 homes, 47 bridges, 15 miles of railways, 185 miles of highway were ruined A giant fragments avalanche happened by an earthquake about 5.1 on the Richter scale made a eruption that decreased the elevation of the mountain 's peak from 9,677 ft to 8,363 ft, leaving a wide horseshoe shaped pit. The fragment avalanche was up to .7 cubic miles in volume.

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