Mount St. Helens is an active stratovolcano located in Skamania County, Washington, in the Pacific Northwest region of the United States.
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: ...
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 ...
Jan 5, 2016 ... Geologists call Mount St. Helens a composite volcano (or ... Although Hawaiian-
type eruptions may destroy property, they rarely cause death or ...
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 ...
Aug 27, 2015 ... USGS: Volcano Hazards Program - Cascades Volcano Observatory USGS
Volcano Science Center Mount St. Helens geology and history ...
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.
May 3, 2016 ... 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 ...