Ruppert, Kelly R.

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Preliminary digital geologic map of the Santa Ana 30' x 60' quadrangle, Southern California, version 1.0

The Santa Ana Quadrangle is in the northern part of the Peninsular Ranges Province as defined by Jahns (1954), except for the northeast corner, which is underlain by basement rocks of the Transverse Ranges Province. A summary of the general geology of th