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About the Pacific Northwest
Cascade Volcanoes

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See also "Table of Past Eruptions" and visit each Northwest Volcano


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A Provocative Description of the Pacific Northwest

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Ah yes, those gorgeous Northwest skylines punctuated with soaring snow-capped peaks!  Have you ever thought about why the region is blessed with such beauty?  Because underneath many of those beautiful, jagged, snowy mountains are… volcanoes!

If you are standing in the Pacific Northwest, you are standing on the results of the Juan de Fuca oceanic plate grinding its way down under the North American continental plate. Although the two plates meet 50-70 miles offshore, about 100 miles inland hot materials rise from the Juan de Fuca "subducted" plate to the surface.  There they build (note the present tense!) the volcanoes of the Cascade Range, which march north-south from Mount Garibaldi in British Columbia to Lassen Peak in California.

For a nice visual summary showing how the northwest US states seem to have more than their fair share of "volcanic hazards", have a look at this map by the USGS.   Note where the Cascade Mountains and Yellowstone Park are in relation to the purple color theme.  Montana is the only one of our Go Northwest! states which is "volcano-free", although it is within range of the potential effects of Cascade volcano eruptions.

Cascade Peaks
Donald Leslie Mark offers factual information and personal experience of the various Cascade mountains in an easy-to-read style.  Includes original photos.

Cascades Volcano Observatory
Home page for the USGS David A Johnston Cascades Volcano Observatory which is located in Vancouver, Washington.  This site has a wealth of information on the volcanoes.   (Click on a volcano name above for links to their pages on individual volcanoes).

NW Seismic Events
Consists of links to earthquake-related sites for the Pacific Northwest.

Northwest Books from . . . 
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A Guide to Washington's South Cascades' Volcanic Landscapes
South Casdaes (6209 bytes)
by Marge Mueller, Ted Mueller (Contributor), Ira Spring (Photographer)
Mountaineers Books, October 1995 Paperback, 223 pages
Order now...

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Copyright © 1997-2014 Go Northwest, LLC.   All rights reserved.

Revised: January 30, 2013.

Home    British Columbia    Idaho      Montana    Oregon    Washington    Wyoming
About Us    Contact Us    Copyright   Terms of Use    Privacy    Disclaimer    Business Services    List with Us    Advertising   

Go Northwest!®     gonorthwest.com (tm)

Go Northwest!® gonorthwest.com (tm) and GoNorthwest.com (tm) are trademarks of Go Northwest, LLC
All original text, maps, photographs, and other images on this web site, as well as the compilation and design thereof, are
Copyright © 1997-2014 Go Northwest, LLC.   All rights reserved.

Revised: August 14, 2013.

Home    British Columbia    Idaho      Montana    Oregon    Washington    Wyoming
About Us    Contact Us    Copyright   Terms of Use    Privacy    Disclaimer    Business Services    List with Us    Advertising   

Go Northwest!®     gonorthwest.com (tm)

Go Northwest!® gonorthwest.com (tm) and GoNorthwest.com (tm) are trademarks of Go Northwest, LLC
All original text, maps, photographs, and other images on this web site, as well as the compilation and design thereof, are
Copyright © 1997-2014 Go Northwest, LLC.   All rights reserved.

Revised: December 31, 2013.

Home    British Columbia    Idaho      Montana    Oregon    Washington    Wyoming
About Us    Contact Us    Copyright   Terms of Use    Privacy    Disclaimer    Business Services    List with Us    Advertising   

Go Northwest!     gonorthwest.com (tm)

Go Northwest! gonorthwest.com (tm) and GoNorthwest.com (tm) are trademarks of Go Northwest, LLC
All original text, maps, photographs, and other images on this web site, as well as the compilation and design thereof, are
Copyright 1997-2014 Go Northwest, LLC.   All rights reserved.

Revised: April 15, 2014.