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CGS / Regional Geologic Hazards and Mapping Program / Regional Geologic Mapping

Preliminary Geologic Maps - Southern Region 

7.5 Minute Quadrangles (1:24,000 Scale)

Aguanga (5.2 MB) Matilija (6.1 MB) San Clemente (5.2 MB) White Ledge Peak (3.1 MB)
Apple Valley North (3.1 MB) Morro Bay South (6.1 MB)* San Onofre Bluff (1.9 MB)
Bonsall (3.2 MB) Morro Hill (3 MB) San Pasqual (2.5 MB)
Boucher Hill (8.9 MB) Ojai (10 MB) San Vicente Reservoir (1.7 MB)
Camarillo (2.3 MB) Otay Mesa (1.2 MB) Santa Paula (3.6 MB)
Dana Point (2.3 MB) Oxnard (2.2 MB) Santa Paula Peak (11 MB)
El Cajon (2.2 MB) Pala (4 MB) Saticoy (4.6 MB)
Escondido (2.7 MB) Pechanga (4.2 MB) Temecula (4.8 MB)
Fallbrook (4.7 MB) Pitas Point (2.1 MB) Vail Lake (6.2 MB)
Jamul Mountains (2.1 MB) Point Mugu (5.2 MB) Valley Center (3.3 MB) 
Las Pulgas Canyon (3.7 MB) Ramona (4.0 MB) Ventura (6 MB)
Margarita Peak (5 MB) Ritter Ridge (8.6 MB)* Victorville (6.4 MB) *  added 10/30/2009

30 x 60 Minute Quadrangles (1:100,000 Scale)

Oceanside San Diego
Sheet 1 - Geologic Map (4.1 MB) Sheet 1 - Geologic Map (2.7 MB)
Sheet 2 - Correlation and description of map units Sheet 2 - Correlation and description of map units
Long Beach  
Sheet 1 - Geologic Map (7.8 MB)
Sheet 2 - Correlation and description of map units

These maps were created in Adobe Portable Document Format (PDF), and require Adobe Acrobat reader to open. You can download Acrobat by clicking on the icon at the bottom of this page, or by clicking here.

View/Download Maps: (NOTE: All the maps listed above are not displayed on the image below)

To view: click on quadrangle name, map will open in Adobe Acrobat.
To download: with map open, go to Acrobat tool bar, click on the disk icon and a "save a copy" dialog box will open. Or you can right-click on quadrangle name in the list above and select "save target as" to save file to your hard drive.

Download Adobe Acrobat Reader

Preliminary Geologic Map - WHITE LEDGE PEAKPreliminary Geologic Map - PITAS POINTPreliminary Geologic Map - VENTURAPreliminary Geologic Map - SATICOYPreliminary Geologic Map - SANTA PAULAPreliminary Geologic Map - OXNARDPreliminary Geologic Map - CAMARILLOPreliminary Geologic Map - POINT MUGUPreliminary Geologic Map - OJAIPreliminary Geologic Map - SANTA PAULA PEAKPreliminary Geologic Map - MATILIJA

Preliminary Geologic Map - DANA POINTPreliminary Geologic Map - MARGARITA PEAKPreliminary Geologic Map - SAN CLEMENTEPreliminary Geologic Map - FALLBROOKPreliminary Geologic Map - TEMECULAPreliminary Geologic Map - PECHANGAPreliminary Geologic Map - VAIL LAKEPreliminary Geologic Map - AGUANGAPreliminary Geologic Map - SAN ONOFRE BLUFFPreliminary Geologic Map - LAS PULGAS CANYONPreliminary Geologic Map - MORRO HILLPreliminary Geologic Map - BONSALLPreliminary Geologic Map - PALAPreliminary Geologic Map - VALLEY CENTERPreliminary Geologic Map - ESCONDIDOPreliminary Geologic Map - SAN VICENTE RESERVOIRPreliminary Geologic Map - EL CAJONPreliminary Geologic Map - JAMUL MOUNTAINSPreliminary Geologic Map - OTAY MESAOceanside - Sheet 1Oceanside - Sheet 2San Diego - Sheet 1San Diego - Sheet 2