File:Cf. Sabal (fossil palm frond) (Laramie Formation, Upper Cretaceous; Parfet Prehistoric Preserve, Golden, Colorado, USA) 32.jpg
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DescriptionCf. Sabal (fossil palm frond) (Laramie Formation, Upper Cretaceous; Parfet Prehistoric Preserve, Golden, Colorado, USA) 32.jpg |
English: Fossil palm frond (cf. Sabal) in sandstone in the Cretaceous of Colorado, USA.
Seen here is a fossil palm frond exposed on the underside of a tectonically-tilted sandstone bed in Golden, Colorado. This is an old clay mine - soft clay horizons occurred between hard sandstone intervals of the Laramie Formation. The beds here are vertically oriented - structural tilting occurred during the Laramide Orogeny in the Tertiary. The Laramie Formation is a nonmarine, coastal plain to deltaic succession of mostly mixed siliciclastic sedimentary rocks - sandstones, siltstones, claystones, and coals. After clay mining ceased, the site became a landfill for ash from coal burning operations. Landfill activity buried many dinosaur footprints preserved in the Laramie Formation sandstones. The locality is now a "fossil preserve" with dinosaur footprints, plant fossils, and other features that can be closely examined along trails. An odd-looking golf course makes up the rest of the old clay mine. Classification: Plantae, Angiospermophyta, Arecales, Palmae/Arecaceae Stratigraphy: Laramie Formation, Maastrichtian Stage, upper Upper Cretaceous Locality: outcrop along Triceratops Trail, Parfet Prehistoric Preserve, southern side of the town of Golden, Colorado, USA (vicinity of 39° 44' 36.83" North latitude, 105° 13’ 10.66" West longitude) |
Date | |
Source | https://www.flickr.com/photos/47445767@N05/52592789742/ |
Author | James St. John |
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This image was originally posted to Flickr by James St. John at https://flickr.com/photos/47445767@N05/52592789742. It was reviewed on 29 December 2022 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0. |
29 December 2022
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current | 16:12, 29 December 2022 | 4,414 × 1,854 (8.07 MB) | Ser Amantio di Nicolao (talk | contribs) | Uploaded a work by James St. John from https://www.flickr.com/photos/47445767@N05/52592789742/ with UploadWizard |
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Metadata
This file contains additional information such as Exif metadata which may have been added by the digital camera, scanner, or software program used to create or digitize it. If the file has been modified from its original state, some details such as the timestamp may not fully reflect those of the original file. The timestamp is only as accurate as the clock in the camera, and it may be completely wrong.
Width | 4,436 px |
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Height | 1,872 px |
Bits per component |
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Pixel composition | RGB |
Orientation | Normal |
Number of components | 3 |
Horizontal resolution | 200 dpi |
Vertical resolution | 200 dpi |
Software used | Adobe Photoshop Elements 20.0 (Macintosh) |
File change date and time | 05:44, 29 December 2022 |
Exif version | 2.31 |
Color space | sRGB |
Unique ID of original document | F7EF3F3EB9DFF5F074BE0936EE533A13 |
Date and time of digitizing | 14:00, 31 December 1969 |
Date metadata was last modified | 00:44, 29 December 2022 |