• Graphic [37K,InlineGIF]: Different Volcano Types -- Flood Basalt, Shield Volcano, Cinder Cone, Stratovolcano, Lava Dome, Caldera -- Modified from: Allen, 1975

• 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

• 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

• 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

• 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

• Map [22K,GIF]: Volcanic hazards at Mount Hood related to growth of a lava dome -- From: Brantley and Scott, 1993

• Map [22K,GIF]: Volcanic hazards at Mount Hood related to growth of a lava dome near Crater Rock -- From: Brantley and Scott, 1993

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