Regional
Links
Oregon Geology
http://sarvis.dogami.state.or.us/
The Oregon Department of Geology and Mineral Industries. News and information about state geology, gems and minerals, earthquakes and other natural hazards, energy resources, cartography, and related topics.
Geology by Lightplane
http://www.geology.wisc.edu/~maher/air.html
Louis Maher's air photos of landforms and geologic features of several parts of the U.S., taken from a small aircraft in 1966.
Cornwall RIGS Group
http://www.cornwallwildlifetrust.org.uk/geology/
Features British Geological Survey geological map of Cornwall, along with publications article extracts and pictorial gallery of geological features and processes.