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Mount St. Helens


Mount St. Helens or Louwala-Clough is an active stratovolcano located in Skamania County, ... Age of rock, < 40,000 yrs. Mountain type, Active stratovolcano.

Mount St. Helens - Facts and Figures


Location: State of Washington, USA Latitude and Longitude: 46.2º N, 122.2º W, Elevation: 2,549 m (8,363 ft) Volcano Type: Stratovolcano Earliest Eruption: ...

How Volcanoes Work - the Mt. St. Helens eruption


The 1980 eruption of Mt. St. Helens is the most studied volcanic eruption of the .... underlying magma reservoir resulted in the waning of Plinian-type eruptions.

USGS: Volcano Hazards Program CVO Mount St. Helens


Feb 12, 2013 ... USGS: Volcano Hazards Program - Cascades Volcano Observatory. ... Prior to 1980, Mount St. Helens had the shape of a conical, youthful volcano sometimes referred to as the Mount Fuji of ... Volcano type: Stratovolcano

Global Volcanism Program | St. Helens


Country; Volcanic Region; Primary Volcano Type; Last Known Eruption ... CVO reported that on 14 February a M 4.3 earthquake near Mount St. Helens, felt ...

Volcanoes - Weather Wiz Kids weather information for kids


An erupting volcano can trigger tsunamis, flash floods, earthquakes, mudflows and ... Mt. Rainier and Mount St. Helens are examples of this type of volcano.

Mount St. Helens | Volcano World | Oregon State University


Prior to 1980, Mount St. Helens formed a conical, youthful volcano sometimes known as the Fuji-san of America. During the 1980 eruption the upper 400 m of ...

Mount St. Helens Fast Facts - CNN.com


Jul 26, 2013 ... View the Mount. St. Helens Fast Facts on CNN and learn more about the volcano in the Cascade Mountains in Washington state.

Mt Saint Helens Facts


Mt Saint Helens is one of the several Cascade Range volcanoes. .... What type of volcano, shield or composite volcanoes, do you think are the most destructive?

BBC Earth - Mount St Helens - The volcano that erupted sideways


Watch BBC video clips about Mount St Helens, a volcano in Washington, United States, that erupted sideways in ... Aa is a Hawaiian name for a type of lava.

Mount St. Helens is an active stratovolcano located in Skamania County, Washington, in the Pacific Northwest region of the United States.
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Mt. St. Helens History - Mount St. Helens


modern name, Mount St. Helens, was given to the volcanic peak in 1792 by .... occasional spasms of volcanic tremor, a type of continuous, rhythmic ground

Mount St. Helens Eruption: Facts & Information - Live Science


Feb 28, 2013 ... Mount St. Helens erupted on May 18, 1980. The volcano, located in southwestern Washington, used to be a beautiful symmetrical cone about ...

Why are Mount St. Helens' eruptions generally more explosive than ...


Mar 25, 2003 ... A weekly feature provided by scientists at the Hawaiian VolcanoObservatory. ... Eruption column at Mount St. Helens on May 18, 1980.