3D Geologic and Seismic Velocity Model of the San Francisco Bay Region

Long Business Description

The USGS 3-D Geologic and Seismic Velocity Models of the San Francisco Bay region provide a three-dimensional view of the geologic structure and physical properties of the region down to a depth of 45 km (28 miles). Construction of this 3D Bay Area model has been a joint effort of the USGS Earthquake Hazards Program and the USGS National Cooperative Geologic Mapping Program.


Oblique view, looking from the southwest towards San Francisco Bay. The corner of the model has been cut away to show faults (red lines), basins (yellow), and other geologic rock units (various colors).
Oblique view, looking from the southwest towards San Francisco Bay. The corner of the model has been cut away to show faults (red lines), basins (yellow), and other geologic rock units (various colors).

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