Geologic Time Scale
The geologic time scale and important life and Earth history events of the past.
Fossils of the United States
Find out more about the fossils that have been found near where you live or places that you have visited.
United States Earth Science Quick Facts
Find out about the official state fossils, rocks, minerals, and gems of each U.S. state, as well as the highest and lowest points of elevation and places to visit. Geologic and topographic maps for each state are also available. This resource is under development, with more states being added regularly.
Geologic Maps of the United States
Newly developed, simple geologic maps for each state in the country. This resources is under development, with more states being added regularly.
Topographic Maps of the United States
Newly developed topographic maps for each state in the country. This resources is under development, with more states being added regularly.
