Cascades Volcano Observatory
Volcanoes have been erupting in the Cascade Range for over 500,000 years. During the past 4,000 years eruptions have occurred at an average rate of about 2 per century.
This chart shows 13 volcanoes on a map of Washington, Oregon, and northern California and time lines for each showing the ages of their eruptions.
Download this report as a 24" x 20" PDF file (gip63.pdf; 168 kB)
For questions about this report, contact Carolyn Driedger.
Suggested citation and version history
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This report is also available in print from:
USGS Information Services, Box 25286,
Federal Center, Denver, CO 80225
telephone: 888 ASK-USGS; e-mail: infoservices@usgs.gov
U.S. Department of the Interior | U.S. Geological Survey
URL: http://pubs.usgs.gov/gip/63/
Page Contact Information: Michael Diggles
Page Last Modified: June 9, 2008
(mfd)
