Cascade Volcanoes-Washington and Oregon   

Cochise College
USA Geology Maps   
Geology Home Page                                   

Roger Weller, geology instructor

wellerr@cochise.edu

 

Original map is the Geologic Map of the United States
United States Geological Survey
edited by P.B. King and H.M. Beikman, 1974
original scale was 1: 2,500,000

 

 
The same geologic map, but with culture removed