The Plus Side of Volcanoes - Geothermal Energy
http://vulcan.wr.usgs.gov/LivingWith/PlusSide/geothermal.html

Cascade Volcano Observatory, United States Geological Survey


This site is authored by the Cascades Volcano Observatory and provides an introduction about how the internal heat associated with young volcanic systems has been harnessed to produce geothermal energy. There are brief examples of places where geothermal energy is being used or is being considered for development, including the Newberry Caldera in Oregon, the Geysers geothermal field near Santa Rosa, California, and the Salton Sea in California.

This resource is referenced here:
Subject: Environmental Science:Ecosystems:Biogeochemical cycling, Environmental Science:Energy:Renewable & Alternative Energy
Resource Type: Scientific Resources:Overview/Reference Work
Earth System Topics: Human Dimensions:Resources
Topics: Energy/Material cycles