The Geologic Data Subcommittee (GDS) of the Federal Geographic Data Committee (FGDC) is responsible for coordination of geologic data-related activities
FGDC Digital Cartographic Standard for
Geologic Map Symbolization
The standard is provided here in PDF format, which is best for viewing and plotting.
A limited number of paper copies will soon be available.
The standard also is available in
PostScript format.
An ArcGIS 9.3 version is available.
Questions? Please contact Dave Soller and Taryn Lindquist.
More information
DO YOU HAVE THE LATEST VERSION OF THE STANDARD?
Check here.
NOTE: If you prefer, we have
listed the symbols by Section number, here.
- Entire document, including Color Chart and Pattern Chart (34 MB)
- Entire document, without Color Chart and Pattern Chart (28.2)
- Title page (88 KB)
- Table of Contents (52 KB)
- Introductory text (320 KB)
- Index to symbols in Appendix A and to topics in introductory text (388 KB)
- Preface to Appendix A (284 KB)
[includes general information on how to use standard, information on Scientific Confidence and Locational Accuracy of Geologic Map Features, and three Tables.] - Contacts, Key Beds, and Dikes (232 KB)
- Faults (584 KB)
- Folds (536 KB)
- Bedding (96 KB)
- Cleavage (88 KB)
- Foliation (200 KB)
- Lineation (236 KB)
- Lineaments and Joints (56 KB)
- Geophysical and Structure Contours (92 KB)
- Boundaries Located by Geophysical Surveys (52 KB)
- Landslide and Mass-Wasting Features (116 KB)
- Fluvial and Alluvial Features (52 KB)
- Glacial and Glaciofluvial Features (188 KB)
- Periglacial Features (76 KB)
- Lacustrine and Marine Features (96 KB)
- Eolian Features (56 KB)
- Natural Resources (460 KB)
- Hazardous Waste Sites (56 KB)
- Volcanic Features (148 KB)
- Neotectonic and Earthquake-Hazard Features (104 KB)
- Plate-Tectonic Features (128 KB)
- Miscellaneous Uplift and Collapse Features (52 KB)
- Terrestrial Impact Features (84 KB)
- Paleontological Features (76 KB)
- Planetary Geology Features (412 KB)
- Geologic Age Symbol Font ("FGDCGeoAge") (88 KB)
- Suggested Ranges of Map-Unit Colors for Volcanic and Plutonic Rocks and for Stratigraphic Ages of Sedimentary and Metamorphic Rocks (56 KB)
- Lithologic Patterns (496 KB)
- Miscellaneous Map Elements (132 KB)
- Explanation for Pattern Chart (108 KB)
- Pattern Chart (5 MB)
- Explanation for CMYK Color Chart (52 KB)
- CMYK Color Chart (68 KB)
- Topographic and Hydrographic Features (376 KB)
- Geohydrologic Features (316 KB)
- Transportation Features (52 KB)
- Boundaries (52 KB)
- Weather Stations (56 KB)
- Miscellaneous Map Elements (132 KB)
- State Location Maps (376 KB)
- Bar Scales (324 KB)
- Mean Declination Arrows (192 KB)
APPENDIX A. GEOLOGIC MAP SYMBOLS, COLORS, AND PATTERNS
Structure
Go to Geologic Map Standard home page