SeisVolE is a Windows program although it can be operated on a Macintosh computer if Windows emulation software (Virtual PC or SoftWindows; see information in the SeisVolE introduction:...

From subduction to the world of hot spot volcanoes, this online resource for students and teachers of geology will please users with its fun and useful animations, crossword puzzles, and well-written articles. The site...

This site is a gateway to GIS data and imagery for Illinois geology, hydrology, natural history, conservation, environment, land use, Public Land Survey, and infrastructure. These data have been made available by several...

The Marine Geoscience Data System allows users to locate data in marine, continental, and polar environments across numerous data types and disciplines. Provided by the Lamont-Doherty Earth Observatory at Columbia...

This site contains Stereographic Projection and Rose Diagram plotting packages (GEOrient); a structural and drillhole calculator (GeoCalculator); strain, and shear zone calculators; geological field database information;...