• Graphic [12K,GIF]: Schematic drawing of erupting volcano showing tephra types -- Modified from: Gardner, et.al., 1995, USGS Open-File Report 95-498

• Map [20K,InlineGIF]: Distribution within the United States of May 18, 1980 ash fallout from Mount St. Helens -- Modified from: Tilling, Topinka, and Swanson, 1990

• Map [22K,InlineGIF]: May 18, 1980 Ash Plume Path -- Modified from: Sarna-Wojcicki, et.al., 1981, IN: USGS Professional Paper 1250

• Schematic [25K,GIF]: West-East Geologic Section of gully bank near NE base of Mount St. Helens, south of Windy Ridge. -- Modified from: Doukas, 1990, USGS Bulletin 1859

• Map [14K,InlineGIF]: Annual probablility of 10 centimeters or more of tephra accumulation in Washington and Oregon from major Cascade volcanoes -- Modified from: Scott, et.al., 1995, USGS Open-File Report 95-492

• Graphic [18K,InlineGIF]: Plot of thickness vs. distance from vent for several tephras from Cascade Range volcanoes. -- Modified from: Hoblitt, et.al., 1987, USGS Open-File Report 87-297

• Table [14K,GIF]: Holocene tephras from Mount Rainier -- Modified from: Swanson, et.al., 1989, AGU Field Trip Guidebook T106, Taken from: Mullineaux, 1974

• Table [HTML]: Source, age, and description of some postglacial pyroclastic deposits in Mount Rainier National Park -- Modified from: Crandell, 1971, USGS Professional Paper 677

• Graphic [12K,GIF]: Stratigraphic section of Mazama ash -- exposed in excavation at West Village parking lot, at Mount Bachelor. Letter and number symbols to right of column are horizon designations of surface and buried soils. -- Modified from: Scott and Gardner, 1990

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