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Vyvyan Kaye de Guzman
Geography



Mount St. Helens (not part of the A2 case study because all case studies
must be <30 years)

Facts:
Located in Southwest Washington, United States
Remained dormant for 123 years.
An active stratovolcano/ composite volcano
Major Eruption on the 18th of May 1980- triggered by…

Page 2

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Vyvyan Kaye de Guzman
Geography



Massive ash cloud of volcanic materials rise 80,000 feet in 15 minutes,
which reached the earth's atmosphere and may circle the earth for many
years. This will affect the earth's global temperature.
The earthquake that triggered the landslide of the lava dome caused a
landslide…

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