Geology: Geology Websites

Contains thousands of geospatial data sets, and many other kinds of data.

A dictionary of over 2,500 terms related to cartography, GIS, geospatial analysis and other related topics.

2-D and 3-D images of fossils owned by the Museum of Paleontology at the University of Michigan

Videos, photos, podcasts, and other multimedia from the USGS collections.

Free index to publications on named geologic rock units. This is the online version of Lexicon of North American Geology.

Free index to maps and geospatial data. Indexes over 90,000 publications.

Access to over 30,000 photos taken during geologic studies of the United States.

An interactive website showing updates on volcanic activity in the U.S.