Open-File Report 01-293
Open-File Report OF 01-293 contains a digital geologic map database of the Telegraph Peak 7.5’ quadrangle, San Bernardino County, California that includes:
The Correlation of Map Units and Description of Map Units is in the editorial format of USGS Miscellaneous Investigations Series (I-series) maps but has not been edited to comply with I-map standards. Within the geologic map data package, map units are identified by standard geologic map criteria such as formation-name, age, and lithology. Even though this is an author-prepared report, every attempt has been made to closely adhere to the stratigraphic nomenclature of the U. S. Geological Survey. Descriptions of units can be obtained by viewing or plotting the .pdf file (3b above) or plotting the postscript file (2 above). If roads in some areas, especially forest roads that parallel topographic contours, do not show well on plots of the geologic map, we recommend use of the USGS Telegraph Peak 7.5’ topographic quadrangle in conjunction with the geologic map.
First posted September 25, 2001
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Morton, D. M., Woodburne, M. O., Foster, J. H., Morton, Gregory, Cossette, P. M., 2001, Geologic map of the Telegraph Peak 7.5’ quadrangle, San Bernardino County, California: U.S. Geological Survey open-File Report 01-293. 21 pp., https://pubs.usgs.gov/of/2001/0293/.