The
geologic map of California is a special-purpose map made to show
geological features. Rock units or geologic strata are shown by colors
or symbols to indicate where they are exposed at the surface. Structural
features such as faults and shear zones are also shown. Since the first
national geological map, in 1809, there have been numerous maps which
included the geology of California. The first California specific
geologic map was created in 1891. The most recent state-produced
geologic map of California, by the California Department of Natural
Resources is 1:750,000 scale, and was created in 2000 by the
department's California Geological Survey (CGS).
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