California Geological Survey - Special Report 217
Geologic Compilation of Quaternary Surficial Deposits in Southern California | July 2010
by
Trinda L. Bedrossian, CEG, Peter Roffers and Cheryl A. Hayhurst, PG
Digital Preparations by Solomon McCrea, Barbara Wanish and Jim Thompson
The Department of Conservation, California Geological Survey (DOC/CGS), with funding from the Department of Water Resources (DWR), has completed 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 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. (
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Special Report 217 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 (1.3 MB)
Project Index Map (11 MB)
Legend and Correlation Chart (599 KB)
Correlation of Derivative and Source Map Units (565 KB)
GIS Data
Southern California Quaternary Surficial Deposits Data (547 MB)
Southern California Quaternary Surficial Deposits Data (East Taft and Tehachapi) (94 MB)
GIS Layer Files (26 KB)
Metadata (36 KB)
Maps
Click on the 30' x 60' Quadrangle Index Map, or see below for the complete list of individual map files
Amboy Quadrangle
Blythe Quadrangle
Cuddeback Lake Quadrangle
Cuyama Quadrangle
El Cajon Quadrangle
Long Beach Qaudrangle
Los Angeles Quadrangle
Mesquite Lake Quadrangle
Oceanside Quadrangle
Orange County 100k Map
San Bernardino Quadrangle
San Diego Quadrangle
San Gabriel River Hydrologic Unit 100k Map
Santa Ana Quadrangle
Santa Barbara Quadrangle
Sheep Hole Mountains Quadrangle
Taft Quadrangle (released March 13, 2012)
Tehachapi Quadrangle (released March 13, 2012)