File:Porphyritic phonolite (Eocene, 49 Ma; Devils Tower, northeastern Wyoming, USA) 2.jpg
Jump to navigation
Jump to search
Size of this preview: 522 × 599 pixels. Other resolutions: 209 × 240 pixels | 418 × 480 pixels | 669 × 768 pixels | 892 × 1,024 pixels | 1,995 × 2,289 pixels.
Original file (1,995 × 2,289 pixels, file size: 2.44 MB, MIME type: image/jpeg)
Captions
Captions
Add a one-line explanation of what this file represents
Summary[edit]
_2.jpg&action=edit§ion=1){kind=link}
| Description |
English: The principal scenery at America's first national monument in northeastern Wyoming is a distinctive igneous feature called Devils Tower. It has been variously interpreted as a volcanic neck (probable), an eroded laccolith (unlikely), or an eroded stock (possible). The vertical to subvertical striations along the sides of Devils Tower represent columnar jointing, formed as the original molten rock cooled and contracted. Devils Tower is one of three classic localities on Earth that have excellent columnar jointing - the other sites are Devils Postpile in California and Giants Causeway in Ireland. The rocks of Devils Tower are 49 million year old porphyritic phonolites, formed during the Eocene.
Locality: Tower Trail, Devils Tower National Monument, northeastern Wyoming, USA |
| Date | |
| Source | https://www.flickr.com/photos/47445767@N05/15900729432/ |
| Author | James St. John |
Licensing[edit]
_2.jpg&action=edit§ion=2){kind=link}
This file is licensed under the Creative Commons Attribution 2.0 Generic license.
- 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 James St. John at https://flickr.com/photos/47445767@N05/15900729432 (archive). It was reviewed on 19 December 2019 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 | 01:48, 19 December 2019 | | 1,995 × 2,289 (2.44 MB) | Ser Amantio di Nicolao (talk | contribs) | User created page with UploadWizard |
You cannot overwrite this file.
File usage on Commons
There are no pages that use this file.
_2.jpg&oldid=623532357){kind=link}