EarthWorks Geospatial Catalog

Geologic map of the Antioch South & Brentwood quadrangles, Contra Costa County, California [cartographic material] / by Thomas W. Dibblee, Jr. ; edited by John A. Minch.

Relief shown by contours and spot heights. "Topographic base map from available USGS 7.5-minute quadrangle Antioch South, CA 1953, DMA 1659 IV NE - Series V895, Photorevised 1980; Brentwood, CA 1978, AMS 1659 I NW - Series V895." "First printing, February 2006." "Contour interval Antioch South quadrangle 20 feet ; Brentwood quadrangle 20 and 5 feet." Includes quadrangle location map, index to adjacent 7.5 minute quadrangles, and index to sources of geology.
Santa Barbara Museum of Natural History
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