USGS/Cascades Volcano Observatory, Vancouver, Washington
Three Sisters, Oregon
- News and Current Events
- Current Activity
- Background and Information
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CASCADE RANGE SUMMARY: Three Sisters
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DESCRIPTION: Three Sisters Volcanoes
-- Geographic Setting, Geologic and Eruptive History
-- includes
Broken Top ...
Cayuse Crater ...
Collier Glacier ...
Eruptive History ...
"Faith", "Hope", and "Charity" ...
High Cascades ...
Le Conte Crater ...
Middle Sister ...
North Sister ...
Rock Mesa ...
Shevlin Park Tuff ...
South Sister ...
Three Sisters ...
Volcanic Background ...
Volcano Monitoring ...
- Current Hazards Report
- Special Items of Interest
- Maps, Graphics, and Images
- Publications and Reports
- Items of Interest
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Active and Potentially Active Volcanoes in Oregon
-- Excerpt from: Wright and Pierson, 1992, USGS Circular 1073,
includes South Sister
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America's Volcanic Past - Oregon
-- includes volcanic highlights and features
-- includes Three Sisters
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Annotated NASA Images - Menu
-- includes the Three Sisters
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Broken Top Volcano - Menu
-- close neighbor of the Three Sisters
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Cascade Range Current Activity Updates
-- includes the Three Sisters
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Cascade Range Summary - Three Sisters
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Cascades Eruptions During the Past 4000 Years - Graphic
-- [Graphic,70K,InlineGIF]
-- includes South Sister
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Cascade Range Volcanoes - Interactive Table
-- interactive table, includes brief volcano summary,
links to current publications and research, includes Oregon Volcanoes
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Cascade Range Volcanoes and Volcanics - Menu
-- general information about the Cascade Range Volcanoes and Volcanic Activity,
including the Three Sisters
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Central Oregon High Cascades - Description
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Central Oregon High Cascades - Menu
-- general information on Oregon's "High Cascades" Volcanoes, including the
Three Sisters
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Collier Glacier, Middle Sister - Description
- Current GPS - Link
[06/04]
-- Link courtesy USGS Menlo Park
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Current Seismicity - Link
[04/04]
-- Link courtesy
University of Washington Pacific Northwest Seismic Network
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Dee Wright Observatory
-- view the Three Sisters from the roof
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Deformation Project - CVO Project Menu
-- general information about the Volcano Deformation Project, including the
monitoring of South Sister
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Earthquakes and Seismicity - Menu
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Eruptive History - Menu
-- Three Sisters Eruptive History Menu
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Eruptive History
-- Excerpt from: Scott, et.al., 2001
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Eruptive History of Three Sisters region during past 15,000 years - Graphic
-- [Graphic,18K,InlineGIF]
-- Modified from: Scott, et.al., 2001, USGS Open-File Report 99-237
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"Faith", "Hope", and "Charity"
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Field Trip Guide to the Central Oregon High Cascades
-- Scott and Garnder, 1990, Oregon Geology, v.52, n.5 and n.6
-- includes Three Sisters Region
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Geographic Setting
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Glaciers and Glaciations - Description
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Hazards - Menu
-- Three Sisters Volcano and Hydrologic Hazards Menu
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Hazards Report and Map
-- Current 1999
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Holocene Rhyodacite Eruptions on the Flanks of South Sister Volcano, Oregon
-- Scott, W.E., 1987,
IN: Fink, J.H., (ed.), 1987, GSA Special Paper 212
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InSAR Monitoring - West Uplift - Menu
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Mafic Volcanoes and Volcanic Fields - Description
-- general information about Mafic Volcanoes and Volcanic Fields,
including the Three Sisters - Mount Bachelor Region
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Mafic Volcanoes and Volcanic Fields - Menu
-- general information about Mafic Volcanoes and Volcanic Fields,
including the Three Sisters - Mount Bachelor Region
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Maps and Graphics - Three Sisters
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Measurements of slope distances and zenith angles at Newberry and
South Sister Volcanoes, Oregon, 1985-1986
-- Iwatsubo, Topinka, and Swanson, 1988,
USGS Open-File Report 88-377
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Monitoring - Menu
-- Three Sisters Monitoring Menu
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Oregon Volcanoes and Volcanics - Menu
-- general information about Oregon Volcanoes and Volcanic Activity,
including the Three Sisters
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Pacific Northwest Seismograph Network
-- includes Maps, and link to the University of Washington's Geophysics Program
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CVO Photo Archives - Three Sisters
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Publications and Reports - Three Sisters
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Seismicity - Menu
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South Sister Volcano: A Network of Short Traverses to Determine Tilt Changes
-- Excerpt from: Dzurisin, 1992, Geodetic Leveling as a Tool for
Studying Restless Volcanoes:
IN: USGS Bulletin 1966
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Three Sisters Eruptive History
-- Excerpt from: Scott, et.al., 2001
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Three Sisters Volcanoes - Description
-- Geographic Setting, Geologic and Eruptive History
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Three Sisters Volcanoes - Visit A Volcano
-- includes information, maps, links, etc.
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Visit a Volcano - Three Sisters
-- includes information, maps, links, etc.
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Volcanic Fields and Mafic Volcanoes - Description
-- general information about Mafic Volcanoes and Volcanic Fields,
including the Three Sisters - Mount Bachelor Region
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Volcanic Fields and Mafic Volcanoes - Menu
-- general information about Mafic Volcanoes and Volcanic Fields,
including the Three Sisters - Mount Bachelor Region
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Volcanic Heights in the Western United States
-- includes the Three Sisters
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Volcano Deformation Project - CVO Project Menu
-- general information about the Volcano Deformation Project, including the
monitoring of South Sister
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Volcano Hazards in the Three Sisters Region, Oregon
-- Scott, Iverson, Schilling, and Fischer, 2001, USGS Open-File Report 99-437
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Volcano Names
-- includes Three Sisters
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West Uplift - Menu
-- includes InSAR monitoring
- Useful Links
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CVO Educational Outreach Menu
-- CVO Menu -- Educational Ideas,
Information, Teacher's Aids, "Fun Stuff",
Videos and Posters, USGS Educational Links, etc.
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Living With Volcanoes
--
Facts and Information; Questions and Answers; Historical,
Cultural, and the Economic Sides of Volcanoes; Tourism and Recreation
Information, "Real-Time" World-Wide Volcano-Cams;
and Information About "Dantes Peak"
URL for CVO HomePage is:
<http://vulcan.wr.usgs.gov/home.html>
URL for this page is:
<http://vulcan.wr.usgs.gov/Volcanoes/Sisters/framework.html>
If you have questions or comments please contact:
<GS-CVO-WEB@usgs.gov>
06/03/04, Lyn Topinka