Image:Pyroclastic Flow St. Helens.jpg

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Description

U.S. Geological Survey scientist examines pumice blocks at the edge of a pyroclastic flow from the May 18, 1980 eruption.
Source

United States Geological Survey - http://vulcan.wr.usgs.gov/Volcanoes/MSH/Images/MSH80/framework.html#pyroclastic_flows
Date

05-30-1980
Author

Donald A. Swanson
Permission
(Reusing this image)
Public domain This image is a work of a United States Geological Survey employee, taken or made during the course of the person's official duties. As a work of the United States Government, the image is in the public domain. For more information, see the USGS copyright policy. See Wikipedia:Public domain and Wikipedia:Copyrights for more details.

File history

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current04:50, 22 January 2008600×410 (78 KB)Axcordion (Talk | contribs) ({{Information |Description=U.S. Geological Survey scientist examines pumice blocks at the edge of a pyroclastic flow from the May 18, 1980 eruption. |Source=United States Geological Survey - http://vulcan.wr.usgs.gov/Volcanoes/MSH/Images/MSH80/framework.)

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