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: ...
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 ...
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
Geologists call Mount St. Helens a composite volcano (or stratovolcano), a term
for ... Although Hawaiian-type eruptions may destroy property, they rarely cause ...
While the 1980 eruption of Mt St Helens (USA) is one of the most well-known and
... When St Helens erupted the massive avalanche of debris that slid from the ...
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 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 ...
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 ...