File:Geological mapping1.gif
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Geological_mapping1.gif (223 × 158 pixels, file size: 9 KB, MIME type: image/gif)
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Summary[edit]
| Description | Each geologic unit on a geological map is assigned a set of letters to symbolize it on the map (for example, to the left of the red arrows at location 1). Usually the symbol is the combination of an initial capital letter followed by one or more small letters. The capital letter represents the age of the geologic unit. |
| Date | before 2000-09-26 |
| Source | http://www.nature.nps.gov/geology/usgsnps/gmap/gmap2.html |
| Author | National Park Service and Russell W. Graymer of Western Region Mapping Team, U.S. Geological Survey |
Licensing[edit]
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This image is in the public domain in the United States because it only contains materials that originally came from the United States Geological Survey, an agency of the United States Department of the Interior. For more information, see the official USGS copyright policy.
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 13:17, 26 January 2011 | | 223 × 158 (9 KB) | דקי (talk | contribs) |
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