Geology Cafe

Index Map of Southern San Diego County

Geography of the San Diego Quadrangle (1:100,000 scale)

Switch to Geologic Map

Click on individual 7.5 minute quadrangle maps for a larger view.
This map has been modified from "Geologic map of the San Digego 30'x 60' Quadrangle, California." California Geological Survey, Regional Geologic Map, 2008, by Kennedy, M.P., Tan, S.S., and others. The original geologic map has been split into individual 7.5 minute quadranges for easier viewing.
Click on individual 1:24,000 quadangle maps for a larger view. Note that topographic map contours and some roads appear overlain on the geology.

Map Information

Map Units (color and symbol index of geologic formations and features illustrated on the map)
Correlation of Map Units
(symbols of units used onshore compared with offshore of San Diego County).
Map Scale reference (1:100,000 scale)

Click here to see the original source geologic map and explanation pamphlet (large .pdf files).

View of rocks exposed along the sea cliffs in the Point Loma 7.5 minute quadreangle, located in Cabrillo National Monument in southern San Diego County. Layers of Cretaceous-age deep sea fan deposits are unconformably overlain by younger Quaternary-age alluvial and marine terrace deposits.
Geologic Map of Del Mar Quadrangle. Geologic Map of Poway 7.5 minute quadrangle Geologic map of the La Jolla 7.5 minute quadrangle Geologic Map of the La Mesa 7.5 minute quadrangle Geologic Map of the Point Loma Quadrangle Geologic Map of the National City 7.5 minute quadrangle Geologic map of the Imperial Beach 7.5 minute quadrangle.