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Comparative physiographic diagrams of Mount St. Helens, Washington, and Crater Lake, Oregon

Miscellaneous Field Studies Map 1403

By:
and

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Abstract

These physiographic diagrams provide a visual comparison of two Cascade Range volcanoes which have had their tops destroyed in different ways -- Mount St. Helens in 1980, Mount Mazama (whose site is now occupied by Crater Lake) about 6,800 years ago. Both volcanoes are viewed from the north from 30 degrees above the horizon, with no vertical exaggeration. The ground area portrayed in each diagram is equal; the south edge of the Mount St. Helens drawing is lower than that of Crater Lake drawing because elevations drop away toward the south, whereas elevations are more constant at the north and south edges of the Crater Lake diagram. 

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Additional publication details

Publication type:
Report
Publication Subtype:
USGS Numbered Series
Title:
Comparative physiographic diagrams of Mount St. Helens, Washington, and Crater Lake, Oregon
Series title:
Miscellaneous Field Studies Map
Series number:
1403
Year Published:
1983
Language:
English
Publisher:
U.S. Geological Survey
Publisher location:
Reston, VA
Description:
35.70 x 29.57 inches
Country:
United States
State:
Oregon, Washington
Other Geospatial:
Crater Lake, Mount St. Helens
Scale:
62500
Online Only (Y/N):
N
Additional Online Files (Y/N):
N