USGS/Cascades Volcano Observatory, Vancouver, Washington
Lava Domes
Maps and Graphics, etc.
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[Graphic,37K,InlineGIF]
Different Volcano Types
-- Flood Basalt, Shield Volcano, Cinder Cone,
Stratovolcano, Lava Dome, Caldera
-- Modified from: Allen, 1975
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[Schematic,22K,GIF]
Dome Growth 1980-83 - Ground Profile
-- Taken from tracings of photographs from
fixed photo station on crater floor, approximately 1 kilometer north
of center of dome. Products of each extrusive episode include talus that
accumulated during that episode. Scale varies owing to perspective
view; true east-west basal diameter of dome in
December 1983 was about 830 meters.
-- Modified from: Swanson, et.al., 1987,
IN: GSA Special Paper 212
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[Schematic,10K,GIF]
Dome Growth 1980-86 - Yearly Ground Profile
-- Taken from tracings of photographs from
fixed photo station on crater floor, approximately 1 kilometer north
of center of dome. Includes accumulated talus.
Scale varies owing to perspective view. Approximate 1986 east-west
basal diameter of dome was about 860 meters.
-- Modified from: Topinka, 1992, IN: USGS Bulletin 1966
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[Schematic,14K,GIF]
Lobe Development 1980-81 - Aerial View
-- Schematic drawings of lobe development in the growth of a lava dome,
as traced off aerial photographs of
Mount St. Helens Lava Dome, 1980-1981.
-- Modified from: Swanson, et.al., 1987,
IN: GSA Special Paper 212
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[Schematic,12K,GIF]
Emerging New Lobe, August 1982
-- Taken from tracings of photographs from
photo station on crater floor, showing 1-day and 2-week intervals.
-- Modified from: Topinka, 1992, IN: USGS Bulletin 1966
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[Map,22K,GIF]
Volcanic hazards at Mount Hood related to growth
of a lava dome
-- From: Brantley and Scott, 1993
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[Map,22K,GIF]
Volcanic hazards at Mount Hood
related to growth of a lava dome near Crater Rock
-- From: Brantley and Scott, 1993
Return to:
[Lava Dome Menu] ...
[Mount St. Helens Lava Dome Menu] ...
URL for CVO HomePage is:
<http://vulcan.wr.usgs.gov/home.html>
URL for this page is:
<http://vulcan.wr.usgs.gov/Glossary/Domes/Graphics/framework.html>
If you have questions or comments please contact:
<GS-CVO-WEB@usgs.gov>
09/02/08, Lyn Topinka