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Geologic Compilation of Quaternary Surficial Deposits in Southern California | December 2012

by
Trinda L. Bedrossian, CEG, Peter Roffers, Cheryl A. Hayhurst, PG, Jeremy T. Lancaster, CEG and William R. Short, CEG
Digital Preparations by Solomon McCrea, Barbara Wanish, Jim Thompson, Anita Carney, Michelle A. Meyers and Shannon Utley

The Department of Conservation, California Geological Survey (DOC/CGS), with funding from the Department of Water Resources (DWR), has completed an update of a Geographic Information System (GIS)-based compilation of high-resolution geologic maps of Quaternary age and older deposits in southern California from Santa Barbara to San Diego. Special Report 217 (REVISED) merges existing geologic mapping by various authors, and at different scales, into a common seamless format that normalizes and differentiates alluvial fan deposits, related Quaternary deposits, and various older deposits into 40 derivative units at a scale of 100,000 for the entire area.  (Click to read entire release statement)

 

Special Report 217 (REVISED) is available as a free download below or as a DVD for $45.00 plus $8.00 for shipping and handling.
Click here to order this DVD.

 
 

Project Files

Report (2.1 MB)
Project Index Map (24 MB)
Legend and Correlation Chart (599 KB)
Correlation of Derivative and Source Map Units (1.5 MB)
Appendix E (5.8 MB)
Appendix F (33 MB)

GIS Data

Southern California Quaternary Surficial Deposits Data (960 MB)
GIS Layer Files (26 KB)
Metadata (25 KB)

Maps

Simplified Alluvial Fan Areas

500k aerial (5.8 MB)
500k hillshade (5.5 MB)
Appendix F Mapbook (33 MB)
Geodatabase (28 MB)
Metadata (15 KB)

Click on the 30' x 60' Quadrangle Index Map, or see below for the complete list of individual map files

Amboy Quadrangle (updated July 10, 2012)
Blythe Quadrangle
Cuddeback Lake Quadrangle (updated July 10, 2012)
Cuyama Quadrangle (updated July 3, 2012)
El Cajon Quadrangle
Ivanpah Quadrangle (released July 3, 2012)
Lancaster Quadrangle (released June 8, 2012)
Long Beach Quadrangle
Los Angeles Quadrangle (updated July 10, 2012)
Mesquite Lake Quadrangle
Newberry Springs Quadrangle (released July 3, 2012)
Oceanside Quadrangle
Orange County 100k Map
Palm Springs Quadrangle (released December 20, 2012)
San Bernardino Quadrangle
San Diego Quadrangle
San Gabriel River Hydrologic Unit 100k Map 
Santa Ana Quadrangle (updated December 20, 2012)
Santa Barbara Quadrangle
Sheep Hole Mountains Quadrangle
Soda Mountains Quadrangle (released December 20, 2012)
Taft Quadrangle (released March 13, 2012)
Tehachapi Quadrangle (released March 13, 2012)

Amboy 30’ x 60’ Quadrangle - Back to Top

Blythe 30’ x 60’ Quadrangle (West Half) - Back to Top

Cuddeback Lake 30’ x 60’ Quadrangle - Back to Top

Cuyama 30’ x 60’ Quadrangle (Eastern Three-Quarters) - Back to Top

El Cajon 30’ x 60’ Quadrangle - Back to Top

Ivanpah 30’ x 60’ Quadrangle - Back to Top

Lancaster 30’ x 60’ Quadrangle - Back to Top

Long Beach 30’ x 60’ Quadrangle (Onshore Portion) - Back to Top

Los Angeles 30’ x 60’ Quadrangle - Back to Top

Mesquite Lake 30’ x 60’ Quadrangle (California Portion) - Back to Top

Newberry Springs 30’ x 60’ Quadrangle - Back to Top

Oceanside 30’ x 60’ Quadrangle (Onshore Portion) - Back to Top

Orange County 100k Map - Back to Top

Palm Springs 30’ x 60’ Quadrangle - Back to Top

San Bernardino 30’ x 60’ Quadrangle - Back to Top

San Diego 30’ x 60’ Quadrangle (Onshore Portion) - Back to Top

San Gabriel River Hydrologic Unit 100k Map - Back to Top

Santa Ana 30’ x 60’ Quadrangle - Back to Top

Santa Barbara 30’ x 60’ Quadrangle (Onshore Portion) - Back to Top

Sheep Hole Mountains 30’ x 60’ Quadrangle - Back to Top

Soda Mountains 30’ x 60’ Quadrangle - Back to Top


Taft 30’ x 60’ Quadrangle - Back to Top

Tehachapi 30’ x 60’ Quadrangle - Back to Top