File:Sediment-filled mudcrack (Kayenta Formation, Lower Jurassic; north of Bootlegger Canyon, west of Moab, Utah, USA) 10.jpg

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English: Redbeds with sediment-filled mudcrack in the Jurassic of Utah, USA.

This is the Kayenta Formation, a mixed siliciclastics unit of mostly fluvial origin (= deposited in river systems). The bed at the very top is the basal Navajo Sandstone. The irregular vertical structure is a sediment-filled mudcrack. Given the width, depth, and spacing of these features at this outcrop, the mudcrack polygons are sizable (see also: www.flickr.com/photos/jsjgeology/32339908743).

Stratigraphy: uppermost Kayenta Formation, Glen Canyon Group, Lower Jurassic

Locality: along Corona Arch Trail, just north of Bootlegger Canyon & just east of the Colorado River, west of the town of Moab, eastern Utah, USA
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Source https://www.flickr.com/photos/47445767@N05/52495601317/
Author James St. John

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This file is licensed under the Creative Commons Attribution 2.0 Generic license.
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This image was originally posted to Flickr by James St. John at https://flickr.com/photos/47445767@N05/52495601317. It was reviewed on 15 November 2022 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0.

15 November 2022

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current03:19, 14 November 2022Thumbnail for version as of 03:19, 14 November 20224,000 × 3,000 (6.23 MB)Ser Amantio di Nicolao (talk | contribs)Uploaded a work by James St. John from https://www.flickr.com/photos/47445767@N05/52495601317/ with UploadWizard

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