Summaries of geologic projects in cooperation with the National Park Service including Grand Canyon National Park, Lake Mead National Recreation Area, Golden Gate National Recreation Area, Joshua Tree National Park, Yosemite National Park, and others.
Site has links to Lake Mead National Recreation Area: geologic field trips, geologic history, plate tectonics, rocks and minerals, geologic time, geologic maps, and glossary.
Site has links to Mohave National Preserve: geologic field trips, geologic history, plate tectonics, rocks and minerals, geologic time, geologic maps, and glossary.
Site has links to Sunset Crater Volcano National Monument geologic field trips, geologic history, plate tectonics, rocks and minerals, geologic time, geologic maps, and glossary.
Rocks representing a variety of tectonic and depositional environments outcrop along the canal and towpath and reveal the geologic history of the central Appalachian region from the Mesoproterozoic to Jurassic Period.
Detailed background information with descriptions of sites and photos explaining the geology of this organic-rich shale unit that has recently become a significant source of natural gas resources.
This digital map database represents the general distribution of the geology (bedrock and surficial deposits) in San Mateo County. Accompanying text file (*.txt or *.ps) provides current information on the geologic structure and stratigraphy.
Links to information on the formation and structure of Chesapeake Bay including online reports, recent field work, field work archives, cooperating agencies, bibliography, and links to articles about other terrestrial impact craters.
The USGS provides map-on-demand (MOD) printing for selected infrequently requested geologic and other theme map products providing high-quality paper-copy maps as needed. Site links to available map products with thumbnail views and how to order.