USGS/Cascades Volcano Observatory, Vancouver, Washington
Crater Lake, Oregon
Mazama Ash
- Background and Information
-
DESCRIPTION: Mazama Ash
--
Mount Mazama and Crater Lake Caldera ...
Mazama Ash ...
Mazama Ash at Mount Bachelor ...
Mazama Ash at Mount Baker ...
Mazama Ash at Mount Hood ...
- Maps and Graphics
- Items of Interest
-
Ash and Tephra - Description
-- general information about volcanic ash, including definitions and hazards
-
Ash and Tephra - Menu
-- general information about volcanic ash, including definitions and hazards
-
Crater Lake - Menu
-
Mazama Ash - Description
-
Mazama Ash at Mount Bachelor - Description
-
Mazama Ash at Mount Baker - Description
-
Mazama Ash at Mount Hood - Description
-
Mount Mazama and the Formation of Crater Lake Caldera - Description
-
Stratigraphic section of Mazama ash
exposed in excavation at West Village parking lot,
at Mount Bachelor
-- [Graphic,12K,GIF]
--
Letter and number symbols to right of column are horizon
designations of surface and buried soils.
Modified from: Scott and Gardner, 1990
-
Thickness vs. distance from vent for several tephras from
Cascade Range volcanoes - Graphic
-- [Graphic,18K,InlineGIF]
-- Modified from:
Hoblitt, et.al., 1987, USGS Open-File Report 87-297
URL for CVO HomePage is:
<http://vulcan.wr.usgs.gov/home.html>
URL for this page is:
<http://vulcan.wr.usgs.gov/Volcanoes/CraterLake/MazamaAsh/framework.html>
If you have questions or comments please contact:
<GS-CVO-WEB@usgs.gov>
04/26/07, Lyn Topinka
![Graphic [12K,GIF]: Stratigraphic section of Mazama ash exposed in excavation at West Village parking lot, at Mount Bachelor](http://vulcan.wr.usgs.gov/Imgs/Gif/CraterLake/MazamaAsh/mazama_ash_strat_sec.gif){kind=link}