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Mount St. Helens, located in southwestern Washington state in the Cascade mountain range, erupted on May 18, 1980. Sixty-one people died as a result of the eruption. This was the first known volcanic eruption in the 48 contiguous United States (excluding Alaska and Hawaii) to claim a human life. Mount St. Helens is classified as a composite volcano (a steep-sided, often symmetrical cone constructed of alternating layers of lava flows, ash, and other volcanic debris). Composite volcanoes tend to erupt explosively.

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On what day and at what time did the 1980 eruption happen?

on the mnt st helens eruption in 1980 it was may 18th at 8:30 am


What time did the eruption of Mount St Helens stop?

well it might of stop around probaly 1982 to do onthis is what i heard from researches .


On what day and what time did the 1980 eruption happen?

Mt. St. Helens? That was on May 18th 1980 at 8:32.


How many did the eruption of Mount St helens kill in July 10 2008?

The eruption of Mount St. Helens did not occur on July 10, 2008. The most significant eruption of the volcano took place on May 18, 1980, which resulted in 57 fatalities. There were no fatalities associated with any eruptions in July 2008, as the volcano was relatively quiet during that time.


What time was the eruption st helens?

It started at 8:32 am


Has mt st helens erupted before 1980?

Yes, many times.Most recently prior to 1980 was a 57-year eruptive period that started in 1800 was named after the Goat Rocks dome, and is the first time that both oral and written records exist of Mount Ste. Helens erupting.


Why is Mt St Helens famous for?

for its deadly eruption a long time ago


What is a volcano that hasn't erupted in a long time and is unlikey to erupt again?

An extinct volcano has not had an eruption for at least 10,000 years and is not expected to erupt again in a comparable time scale of the future


Why did the eruption of Mount St Helens result in the formation of a key bed?

The eruption of Mount St. Helens resulted in the formation of a key bed because the volcanic ash and debris were deposited over a wide area in a relatively short period of time. This layer of ash can be easily identified and dated, making it a useful marker bed for correlating rock layers in different locations.


Did Mount Saint Helens erupt at night or day?

Mount Saint Helens erupted on May 18, 1980, at 8:32 AM local time. The eruption was preceded by a series of earthquakes and volcanic activity, leading to a significant explosion that drastically altered the landscape. The event was widely observed and documented due to its timing during the day.


Why is Mount St Helens where it is?

Mount St. Helens made the news when it became active on March 20th, 1980, and then erupted on May 18th, 1980. Use the link below to the Wikipedia post on this event. It comes complete with pictures, drawings and an easy-to-read description of the action. And it is free.


Why mount st helens volcanic eruption is unique?

Mount St. Helens' eruption in 1980 was unique due to its explosive nature and the extensive geological studies that followed. It was the first major volcanic eruption in the contiguous United States in over 60 years, providing scientists with a rare opportunity to observe and document volcanic processes in real-time. The eruption dramatically reshaped the landscape, with a massive lateral blast, ash fall, and the formation of a new volcanic dome, offering insights into volcanic hazards and eruption dynamics. Its well-documented aftermath has made it a key case study in volcanology.