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

Mount St. Helens - Wikipedia

en.wikipedia.org/wiki/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

www.ngdc.noaa.gov/hazard/stratoguide/helenfact.html

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: ...

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

www.livescience.com/27553-mount-st-helens-eruption.html

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 ...

Mt. St. Helens History - Mount St. Helens

www.mountsthelens.com/history-1.html

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

The Volcanoes of Lewis and Clark - Mount St. Helens - Summary

volcanoes.usgs.gov/observatories/cvo/Historical/LewisClark/Info/summary_mount_st_helens.shtml

Geologists call Mount St. Helens a composite volcano (or stratovolcano), a term for ... Although Hawaiian-type eruptions may destroy property, they rarely cause ...

Mt St Helens | Volcano World | Oregon State University

volcano.oregonstate.edu/mt-st-helens

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 ...

How Volcanoes Work - the Mt. St. Helens eruption

www.geology.sdsu.edu/how_volcanoes_work/Sthelens.html

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.

Mount St. Helens: Facts about deadliest U.S. volcanic event 35 ...

www.usatoday.com/story/news/nation-now/2015/05/15/mount-st-helens-eruption-35-anniversary/27170663/

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 ...

Global Volcanism Program | St. Helens

volcano.si.edu/volcano.cfm?vn=321050

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 ...