Chapter 11 Environmental Geology and Earth Resources
Geology, U.S. Geological SurveyWorldwide volcanic activity mapEarthquake information from around the worldCascades Volcano ObservatoryPlate tectonics, U.S. Geological SurveyGeology of Hawaiian volcanoesSavage Earth, Public Broadcasting System site on geological forcesMining claims on public landsOffice of Surface Mining, U.S. Department of the InteriorInformation for mining activists