geology

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 Geology.com




More from Geology.com


Diamonds from Coal
Biggest Misconception: Lots of people think that diamonds form from coal. Not True!
Sliding Rocks
Sliding Rocks Mystery: What causes these rocks to slide across a Death Valley playa?
UV Mineral Lamp
Portable UV Lamp - short / long wave for fluorescent minerals. Safety glasses included.
Opal
Pictures of Opal: A collection of different types of opal from all around the world and Mars too!
Gem Silica
Gem Silica is a blue chalcedony colored by copper. It is the rarest and most valuable chalcedony.
Ruby and Sapphire
Ruby and Sapphire are the 2nd and 3rd most popular colored stones in the United States.
Great Rift Valley
The East Africa Rift System: Learn about the complex East Africa Rift Valley system.
Olympus Mons
Olympus Mons: The largest volcano in the solar system is on Mars.


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





© 2005-2016 Geology.com. All Rights Reserved.
Images, code, and content on this website are property of Geology.com and are protected by copyright law.
Geology.com does not grant permission for any use, republication, or redistribution.
Images, code and content owned by others are marked on the pages where they appear.