U.S. Geological Survey - Provides reliable, impartial information to describe and understand the Earth.
Geology.com - Links to popular topics in Geology and earth sciences, journals, and university departments.
About Geology - Earth science encompasses everything from outer space to the Earth's fiery core.
The Geological Society of America - eBook / .pdf versions of geological journals and books.
GeologyLink - A public forum for all matters geological.
Geology Entrance - Exploring this series of exhibits will take you on a journey through the history of the Earth.
Yahoo! Geology and Geophysics - Learn the field of science dedicated to the Earth's history and structure.
Journal of Geology - Devoted to research and theory in geophysics.
Geology Rocks - Online lessons, copyright free photos and diagrams, games and a forum.
Science Courseware.org - The Virtual Courseware Project produces interactive, simulations for life science.
Geology Links Page - Categorized Geology Link Page.
Galapagos Geology on the Web - There are few places quite as facinating as the Galapagos.