Information on world earthquake activity with links to facts and lists on large earthquakes, earthquake e-mail notification, hazards and preparedness, educational links, news and highlights and other seismic information.
Gateway to the geology of the San Francisco Bay region with links to geologic maps, paleontology, marine geology, earthquakes, landslides, and geophysics. Includes maps, 3-D models, and photos.
Overview of the research group Geophysical Unit of Menlo Park (GUMP) with links to studies, models, and maps on gravity and geomagnetism in Nevada, California, Oregon, Washington and the U.S.
Webpage based on USGS Open File Report 98-139 links to information on the San Francisco Bay estuary to study dredge disposal effects, fish habitats, sediment transport, rock pinnacles and navigation, and consequences of a large oil spill.
Overview of USGS programs related to geomagnetism including observatories, data, program services, links to models, charts, and movies, program contacts, Intermagnet, Geomag, publications, and bibliographies.
Description of the SCAMP project to produce geologic and geophysical maps and reports that describe the geologic setting and geologic history of southern California.
Information on the Earth's crust with a contour map of the thickness plus links to a global crustal database, a global crustal model - CRUST 5.1, and regional crustal models.