File:Rainbow Bridge National Monument - 50113130527.jpg
Original file (3,000 × 2,000 pixels, file size: 4.71 MB, MIME type: image/jpeg)
Captions
Captions
Summary
[edit]
| Description |
English: Rainbow Bridge is made from sandstone originally deposited by wind as sand dunes, during the end of the Triassic and the Jurassic periods. Extreme fluctuations in climate during the Triassic and Jurassic periods—the region was alternately a sea and desert on par with the Sahara—produced layers of sandstone with different levels of hardness. By the end of the Jurassic, the sea returned to cover these layers of sandstone and compressed them so tightly that they would persist until the present day.
As Bridge Creek flowed toward the growing Colorado River during the last ice age, it carved first through softer rocks and veered away from the harder Triassic and Jurassic sandstones, eventually creating a wide hairpin bend that flowed around a solid "fin" of sandstone that would become Rainbow Bridge. The previous course of the creek is still visible above the bridge. Water flows back on itself at bends and wide spots, creating swirling eddies along the banks. As the creek flowed around Rainbow Bridge fin, these abrasive eddies formed on both the upstream and downstream sides and cut circular alcoves in the rock wall. The sediment in the creek eventually scoured the softer layers of sandstone away, leaving the harder layers behind. Source: Wikipedia en.wikipedia.org/wiki/Rainbow_Bridge_National_Monument |
| Date | Taken on 30 November 2019, 12:06:25 |
| Source | https://www.flickr.com/photos/21874566@N07/50113130527/ |
| Author | RuggyBearLA |
Licensing
[edit]
- You are free:
- to share – to copy, distribute and transmit the work
- to remix – to adapt the work
- Under the following conditions:
- attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
|
This image was originally posted to Flickr by RuggyBearLA at https://flickr.com/photos/21874566@N07/50113130527. It was reviewed on 19 November 2020 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0. |
File history
Click on a date/time to view the file as it appeared at that time.
| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 03:16, 19 November 2020 | | 3,000 × 2,000 (4.71 MB) | Ser Amantio di Nicolao (talk | contribs) | Uploaded a work by RuggyBearLA from https://www.flickr.com/photos/21874566@N07/50113130527/ with UploadWizard |
You cannot overwrite this file.
File usage on Commons
There are no pages that use this file.
