File:Grand Canyon Supergroup with basalt dike in Hakatai Shale.JPG
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Summary
| Description | Grand Canyon Supergroup with basalt dike in Hakatai Shale |
| Source | http://www.nature.nps.gov/geology/parks/grca/age/index.cfm |
| Author | National Park Service |
Licensing
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This image or media file contains material based on a work of a National Park Service employee, created as part of that person's official duties. As a work of the U.S. federal government, such work is in the public domain in the United States. See the NPS website and NPS copyright policy for more information. |  |
File history
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 13:13, 6 September 2009 | | 800 × 526 (104 KB) | Mav | == Summary == {{Information |Description=See file name |Source=http://www.nature.nps.gov/geology/parks/grca/age/index.cfm |Date= |Author=National Park Service |Permission= |other_versions= }} == Licensing == {{PD-USGov}} [[categ |
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