Overview of the Three Sisters Volcanoes of Oregon

Aerial view over northward toward North & Middle Sister 
Photo by Ken McGee

This web presentation was prepared by Kerrie Howard in April 2002 for ES 767 Global Tectonics.  This course is taught by Dr. J. S. Aber at Emporia State University located in Emporia, Kansas.

Table of Contents


Description of the Three Sisters

Geology of the Area

Current Hazards of the Area