File:Wave-cut platform below Allt Wen - geograph.org.uk - 1750017.jpg
Size of this preview: 800 × 600 pixels. Other resolutions: 320 × 240 pixels | 640 × 480 pixels | 1,024 × 768 pixels.
Original file (1,024 × 768 pixels, file size: 516 KB, MIME type: image/jpeg)
 | This is a file from the Wikimedia Commons. Information from its description page there is shown below. Commons is a freely licensed media file repository. You can help. |
Summary
| Description |
English: Wave-cut platform below Allt Wen Alternating hard and soft layers have been folded up vertically and eroded by the tides, resulting in a regular ripple pattern at the surface.
Allt Wen, the northern end of the coastal cliff south of Aberystwyth, is a remarkable geological site. A number of micro-folds only a few metres across with nearly parallel vertical limbs have been exposed on a wave-cut platform at the base of the cliff. The exact sequence of events that have taken place here is still debated, but it is thought that during the Caledonian orogeny 400Ma ago, freshly deposited layers of sediment became pressurised and folded before they were fully lithified and thus more deformable. There are also quartz veins parallel with the bedding in some places. It is thought that they were pressed into the fresh sediment before the folding took place. For more details, see the Geological Conservation Review's site report http://www.thegcr.org.uk/Sites/GCR_v03_C04_Site2318.htm . |
| Date | |
| Source | From geograph.org.uk |
| Author | Rudi Winter |
| Attribution (required by the license) | Rudi Winter / Wave-cut platform below Allt Wen / |
| Camera location |   | View this and other nearby images on: OpenStreetMap |  |
|---|
_heading:337.00&language=en){kind=link}
| Object location | | View this and other nearby images on: OpenStreetMap | |
|---|
_heading:337.00&language=en){kind=link}
Licensing
|
This image was taken from the Geograph project collection. See this photograph's page on the Geograph website for the photographer's contact details. The copyright on this image is owned by Rudi Winter and is licensed for reuse under the Creative Commons Attribution-ShareAlike 2.0 license.
|
This file is licensed under the Creative Commons Attribution-Share Alike 2.0 Generic license.
Attribution: Rudi Winter
- 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.
- share alike – If you remix, transform, or build upon the material, you must distribute your contributions under the same or compatible license as the original.
[[Category:
]]
File history
Click on a date/time to view the file as it appeared at that time.
| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 01:21, 6 March 2011 | | 1,024 × 768 (516 KB) | GeographBot | == {{int:filedesc}} == {{Information |description={{en|1=Wave-cut platform below Allt Wen Alternating hard and soft layers have been folded up vertically and eroded by the tides, resulting in a regular ripple pattern at the surface. Allt Wen, the north |
File usage
No pages on the English Wikipedia use this file (pages on other projects are not listed).
Global file usage
The following other wikis use this file:
- Usage on ko.wikipedia.org
- Usage on tr.wikipedia.org
