Geologic map of the Fifteenmile Valley 7.5' quadrangle, San Bernardino County, California

Open-File Report 2001-132
Prepared in cooperation with the U.S. Forest Service (San Bernardino National Forest) and the California Division of Mines and Geology
By:  and 



Open-File Report OF 01-132 contains a digital geologic map database of the Fifteenmile Valley 7.5’ quadrangle, San Bernardino County, California that includes:

1. ARC/INFO (Environmental Systems Research Institute, version 7.2.1 coverages of the various elements of the geologic map.
2. A PostScript file to plot the geologic map on a topographic base, and containing a Correlation of Map Units diagram, a Description of Map Units, an index map, and a regional structure map.
3. Portable Document Format (.pdf) files of:
a. This Readme; includes in Appendix I, data contained in fif_met.txt
b. The same graphic as plotted in 2 above. (Test plots have not produced 1:24,000-scale map sheets. Adobe Acrobat pagesize setting influences map scale.)

The Correlation of Map Units (CMU) and Description of Map Units (DMU) is in the editorial format of USGS Miscellaneous Investigations Series (I-series) maps. 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 Fifteenmile Valley 7.5’ topographic quadrangle in conjunction with the geologic map.

Study Area

Additional publication details

Publication type Report
Publication Subtype USGS Numbered Series
Title Geologic map of the Fifteenmile Valley 7.5' quadrangle, San Bernardino County, California
Series title Open-File Report
Series number 2001-132
DOI 10.3133/ofr01132
Year Published 2001
Language English
Publisher U.S. Geological Survey
Contributing office(s) Geology, Minerals, Energy and Geophysics Science Center
Description Readme: 24 p.; Metadata; Database; Map: PDF, 43.85 x 32.44 inches; Map: PostScript file
Country United States
State California
County San Bernardino County
Projection Lambert conformal conic projection
Scale 24000
Additional Online Files (Y/N) Y
Google Analytic Metrics Metrics page