geologyMcAfee SECURE sites help keep you safe from identity theft, credit card fraud, spyware, spam, viruses and online scams

Home » Volcanoes » Mount St. Helens

Mount Saint Helens Videos from USGS

Recounting a 30-year history of eruptions and monitoring

Videos released in May, 2010 by the United States Geological Survey.

Mount St. Helens Background

Mount St. Helens is a stratovolcano located in southern Washington, in the western part of the Cascade Mountain Range. It is about 100 miles south of Seattle, Washington and 50 miles northeast of Portland, Oregon. It is an eruptive volcanic cone built up of interlayered ash, pumice, lava flows, volcanic domes and other deposits. It is a young volcano. The first eruptions occurred about 40,000 years ago and it grew in a series of eruptive stages.

Modern Eruptions

The most recent eruption series at Mount St. Helens began on May 18, 1980 at 8:32 AM. This eruption was catastrophic. To date it has been the deadliest and most costly volcanic eruption in the history of the United States. Fifty-seven people were killed and hundreds of square miles of landscape was covered by blast debris, ash, lahars and pyroclastic flows.

The Opportunity for Monitoring

Numerous other eruptions followed and these eruptions were used by researchers to learn more about monitoring volcanies, test equipment and refine monitoring techniques. In the videos at right, United States Geological Survey researchers explain how they learned from the eruptions and what their new information means for future volcanic monitoring efforts.

Find it on

More from

Utica Shale
Utica Shale is confirmed as a major source of oil, natural gas and natural gas liquids.
Crushed Stone
Crushed Stone - About four tons per person is used each year in the United States.
Shale: The rock that is quickly transforming the energy industry.
Benitoite: A report on the discovery and geology of the State Gem of California - from 1911.
Metals are important mineral products used in manufacturing and construction projects.
Rock Gallery: Photos of igneous, sedimentary and metamorphic rocks.
Corundum is the third hardest mineral. It is also the mineral of ruby and sapphire.
Bottled Water
The Geology of Bottled Water: It costs 1000x as much as tap water. What are you getting?

United States Geological Survey scientists involved in resopnding do the 1980 eruption of Mount St Helens recount their experience, explain the impact of the eruption, its magnitude and what they learned about volcanoes. USGS video.

United States Geological Survey scientists . USGS video.

Diamonds Don't Form From Coal
Largest Oil Spills Map
San Andreas Fault
Igneous, Metamorphic, and Sedimentary Rocks
The Only Diamond Mine in the USA
Marcellus Shale
What is Geology?
Articles About Volcanoes

© 2005-2015 All Rights Reserved.
Images, code and content of this website are property of Use without permission is prohibited. Pages on this site are protected by Copyscape.