Mount St. Helens or Louwala-Clough is an active stratovolcano located in
Skamania County, ... Age of rock, < 40,000 yrs. Mountain type, Active
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: ...
Apr 30, 2010 ... 1—During the past 4,000 years, Mount St. Helens has erupted more frequently
than any other volcano in the Cascade Range. 2—Most of ...
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
May 15, 2015 ... Thirty five years ago, Mount St. Helens erupted in Washington, spewing ash, rock
and hot gases into the air and causing mud to flow down the ...
Mount St. Helens, other active Cascade volcanoes, and .... also began recording
occasional spasms of volcanic tremor, a type of continuous, rhythmic ground
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.
An erupting volcano can trigger tsunamis, flash floods, earthquakes, mudflows
and ... Mt. Rainier and Mount St. Helens are examples of this type of volcano.
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.
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 ...