Open-File Report 02-273
This is a digital map database version of a previous printed geologic map, U.S. Geological Survey Open-File Report 92–183. The original paper map has been faithfully reproduced as a geologic map database for use in a GIS, and thus does not contain updated geologic information for the map area. This publication consists of three parts:
First posted April 30, 2002
Plottable map files
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Wilshire, Howard G., Bedford, David R., Coleman, Teresa, 2002, Digital Version of "Open-File Report 92–183: Geologic Map of the Granite Spring Quadrangle, San Bernardino County, California", U.S. Geological Survey Open-File Report 02-273, 27 pp., https://pubs.usgs.gov/of/2002/0273/.