File:Bedding and cleavage - geograph.org.uk - 1234615.jpg
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Captions
Captions
Bedding and cleavage
Summary
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| Description |
English: Bedding and cleavage The rocks in the hills north of the Afon Dyfi belong to the Llandovery group, the oldest part of the Silurian period. The section shown here, which is about 4m high and part of a small rockface by the side of the steep track into Esgaireira forest, appears to be metamorphic rock. The rock splits into thin, almost vertical layers, while wider coloured bands can be seen at an angle of about 30 degrees with the vertical. This occurs when sedimentary rock containing small orientated crystals is folded under pressure. The crystals align perpendicular to the applied stress, resulting in cleavage planes between them. The original bedding, i.e. the pre-metamorphic sedimentary layers, remain identifiable as bands intersecting the cleavage planes. |
| Date | |
| Source | From geograph.org.uk |
| Author | Rudi Winter |
| Attribution (required by the license) | Rudi Winter / Bedding and cleavage / |
| Camera location |   | View this and other nearby images on: OpenStreetMap |  |
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| Object location | | View this and other nearby images on: OpenStreetMap | |
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Licensing
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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.
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This file is licensed under the Creative Commons Attribution-Share Alike 2.0 Generic license.
Attribution: Rudi Winter
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 12:34, 26 February 2011 | | 640 × 640 (300 KB) | GeographBot (talk | contribs) | == {{int:filedesc}} == {{Information |description={{en|1=Bedding and cleavage The rocks in the hills north of the Afon Dyfi belong to the Llandovery group, the oldest part of the Silurian period. The section shown here, which is about 4m high and part of |
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