Allexperts Geology
- Geologists answer submitted questions about geology.
- http://www.allexperts.com/browse.cgi?catLvl=3&catID=1359

Planet Earth: An Introduction to Earth Sciences
- Online text by Roger N. Anderson of Columbia University. Covers origins of the earth and life, plate tectonics, and formation and deformation of continents.
- http://www.ldeo.columbia.edu/res/pi/4d4/planet/

Earth Science World
- American Geological Institute resources for teachers and students. Includes searchable database of earth images, geologic time scale, and interactive features.
- http://www.earthscienceworld.org

Geography Site: Physical Geography
- Illustrated descriptions and explanations of earthquakes, plate tectonics, glaciers and glacial landforms, and volcanoes and volcanic deposits, intended for students up to age 16, but suitable for a wider audience.
- http://www.geography-site.co.uk/pages/physical.html

Strata: William Smith on the Web
- Publications of the father of modern geology, who first drew a chart of the strata under the surface of the earth. Printable version of Smith's famous geologic map of England.
- http://www.unh.edu/esci/wmsmith.html

Wieczorek, Jozef
- Research on the geology of the Tatra mountains and other publications by this researcher.
- http://www.geo-jwieczorek.ans.pl/

Evolving Earth Foundation
- Earth science and natural science resources, articles and online education.
- http://www.evolvingearth.org/

GeoSmitty's Geology and Outdoor Pages
- Information about geology, geocaching and other outdoor adventures.
- http://www.angelfire.com/trek/geosmitty/

Walter Geology Library
- Listing of virtual and on-line geologic field trip guidebooks.
- http://www.lib.utexas.edu/geo/onlineguides.html

Photo Geo Gallery
- Image gallery of European geology.
- http://www.fotogeo-jwieczorek.ans.pl/

Geoscapes Photography
- Geologic and natural history landscape photography of the western United States and Pacific islands.
- http://www.geoscapesphotography.com/

Pangaea
- An information system aimed at archiving, publishing and distributing data from global change research with special emphasis on geological, marine and environmental sciences.
- http://www.pangaea.de/