File:Geological time spiral - large.png
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Summary
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| Description |
English: A diagram depicting geologic time periods |
| Date | |
| Source | The geologic time spiral—A path to the past (ver. 1.1): U.S. Geological Survey General Information Product 58, poster, 1 sheet. Available online at http://pubs.usgs.gov/gip/2008/58/ |
| Author | Joseph Graham, William Newman, and John Stacy, 2008 |
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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 | 12:01, 1 February 2012 | | 2,615 × 2,398 (6.35 MB) | Lambiam (talk | contribs) |
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