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  • 21 Aug, 2019

  • By, Wikipedia

File:2021 Revised USGS Geologic Stratigraphic Column Of The Grand Canyon.jpg

Captions

2021 Geologic stratigraphic column of strata exposed in and near the Grand Canyon showing newly recognized stratigraphic units, major unconformities, and changes in stratigraphic nomenclature and geochronology

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depicts

15 April 2021

36°18'0"N, 112°45'0"W

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Date/TimeThumbnailDimensionsUserComment
current03:06, 4 June 2024Thumbnail for version as of 03:06, 4 June 20241,300 × 867 (357 KB)Paul H.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