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For decades the Geologic Atlas of California (discussed in the next section) has been the primary source of regional-scale geologic maps in California. In an effort to keep the maps current, the CGS has been compiling a new series of Regional Geologic Maps (RGM), starting in 1981.
The 2010 editions of the Geologic Map of California and the Fault Activity Map of California are the latest in the series of statewide geologic maps published by the State, and represent a step forward in the mapping and understanding of California's diverse geology.
The geology of California is highly complex, with numerous mountain ranges, substantial faulting and tectonic activity, rich natural resources and a history of both ancient and comparatively recent intense geological activity.
An approximate map of the Channel Islands' land extent roughly 14,000 years ago, showing their historical connection to each other. While they are currently separated from mainland California by a 230 meters (750 feet) deep channel, at this point in history they were only 7.8 kilometers (4.8 miles) from the mainland compared to the modern 19 ...
The California Geological Survey's interactive geological map allows users to identify the different rock types and fault lines throughout California. In addition to the web viewer, the GIS data can be downloaded for further use.
The 2010 Geologic Map of California and the 2010 Fault Activity Map of California were prepared in recognition of the California Geological Survey’s 150th Anniversary. Both are all-digital products built on the original compilations of C.W. Jennings published in 1977 and 1994.
Geologic Map of California | California Department of Conservation: Open Data and Map Access. To provide a digital database of the Geologic Map of California.
