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Mt. St. Helens
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Published on Nov 18, 2015
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1.
MT. ST. HELENS IS AN ACTIVE VOLCANO
It is located in the state of Washington
2.
Untitled Slide
3.
MT. ST. HELENS IS A COMPOSITE (STRATO) VOLCANO
4.
MT. ST. HELENS PRODUCED ANDESITIC MAGMA
5.
MT. ST. HELENS LAST ERUPTED IN MAY 18, 1980
This eruption had high eruption violence
It blew off some of the mountain
6.
MT. ST. HELENS ERUPTION PRODUCTS
Mt. St. Helens erupted ash and caused a pyroclastic flow
A quarter of the eruption was fresh lava in the form of ash
Ash went 80,000 ft. into the air
7.
HOW TALL IS MT. ST. HELENS
It was 9,677 ft. before it erupted
Today it is about 8,365 ft.
8.
HOW WERE PEOPLE AFFECTED BY MT. ST. HELENS
Some of the areas were covered completely in ash
Shipping was stopped on the Columbia River and some vessels were stranded
In eastern Washington 5,000 motorists were stranded
2 people died from heart attacks by shoveling the ash
9.
5 INTERESTING FACTS
Killed 57 people
Caused ash to land on 11 states
Caused our coldest summer on record
The major eruption that we all know was May,18,1980
It is building a new dome still
10.
HOW DID MT. ST. HELENS GET ITS NAME
George Vancouver was a explorer who surveyed the area in the 18th century
He named it after his friend known as lord St. Helens
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