USGS Series | Open-File Report |
---|---|
Report Number | 2002-468 |
Title | Geologic Map of Mount St. Helens, Washington Prior to the 1980 Eruption |
Edition | Version 1.0 Online Only |
Language | ENGLISH |
Author(s) | Hopson, Clifford A. |
Year | 2008 |
Originating office | Geological Survey (U.S.) |
USGS Library Call Number | - |
Physical description | 2 Map Sheets: 34 x 44 inches |
ISBN | |
Northernmost latitude | 0463000 |
Southernmost latitude | 0460000 |
Easternmost longitude | -1220000 |
Westernmost longitude | -1223000 |
For more information or ordering assistance, call 1-888-ASK-USGS (1-888-275-8747), visit http://ask.usgs.gov, contact any USGS Earth Science Information Center (ESIC), or write:
It is rare that a geologic map exists for a volcano prior to such a catastrophic modification as that produced by the eruption of Mount St. Helens in 1980. As such, this map provides an important historical record of the volcano prior to that eruption. The map has not been reviewed or checked for conformity to USGS editorial standards or stratigraphic nomenclature, and it has not been digitized. This version of the map is unchanged from that submitted to the USGS for publication shortly after the 1980 eruption of Mount St. Helens and includes unresolved inconsistencies with the subsequently published work of Crandell (1987) and Mullineaux (1996). Nevertheless, it is the most accurate available depiction of the pre-1980 edifice and is published here for comparison with more recent geologic mapping and historical perspectives.