File:John Wesley Powell's (1875) Subdivisions of Strata Exposed in Grand Canyon.jpg
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John Wesley Powell's (1875) Subdivisions of Strata Exposed in the Grand Canyon, Then and Now
Summary
[edit]_Subdivisions_of_Strata_Exposed_in_Grand_Canyon.jpg&action=edit§ion=1){kind=link}
| Description |
English: John Wesley Powell's (1875) subdivisions of strata exposed in the Grand Canyon (on left) and their newer names and an important correction (on right) "TB" = Temple Butte Formation. |
| Date | |
| Source | Karlstrom, K., L. Crossey, A. Mathis, and C. Bowman. 2021. Telling time at Grand Canyon National Park: 2020 update. Natural Resource Report NPS/GRCA/NRR—2021/2246. National Park Service, Fort Collins, Colorado. https://doi.org/10.36967/nrr-2285173. |
| Author | U.S. Department of the Interior National Park Service Natural Resource Stewardship and Science Fort Collins, Colorado |
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This work is in the public domain in the United States because it is a work prepared by an officer or employee of the United States Government as part of that person’s official duties under the terms of Title 17, Chapter 1, Section 105 of the US Code.
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
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| current | 15:59, 4 June 2024 | | 2,135 × 1,408 (820 KB) | Paul H. (talk | contribs) | Uploaded a work by U.S. Department of the Interior National Park Service Natural Resource Stewardship and Science Fort Collins, Colorado from Karlstrom, K., L. Crossey, A. Mathis, and C. Bowman. 2021. Telling time at Grand Canyon National Park: 2020 update. Natural Resource Report NPS/GRCA/NRR—2021/2246. National Park Service, Fort Collins, Colorado. https://doi.org/10.36967/nrr-2285173. with UploadWizard |
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