File:Accretionary Lapilli - geograph.org.uk - 831917.jpg
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Summary
| Description |
English: Accretionary Lapilli These little concentric rings are cross-sections of accretionary lapilli. They are formed when ash particles erupted from a volcano in moist clouds, and they accrete like hailstones into spheres. There is a thicker layer of these here than at Stoer, suggesting that the source which produced them was closer to here than to Stoer. It has recently been suggested that they may have been produced in a meteor strike rather than a volcanic eruption, but there is no consensus about this idea. |
| Date | |
| Source | From geograph.org.uk |
| Author | Anne Burgess |
| Attribution (required by the license) | Anne Burgess / Accretionary Lapilli / |
| Camera location |   | View this and other nearby images on: OpenStreetMap |  |
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_heading:315.00&language=en){kind=link}
| Object location | | View this and other nearby images on: OpenStreetMap | |
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_heading:315.00&language=en){kind=link}
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This image has currency in it to indicate scale.
Using coins for scale is discouraged as it will require people unfamiliar with them to look up the dimensions or guess, both of which defeat the purpose of the object in the first place. Coins can also reinforce a geographical bias, and some coins' designs are copyrighted. Ideally, a photograph should include a ruler with the subject (example) or an added scale marking. SI ("metric") units are the most commonly used worldwide (see meter and centimeter). Images with coins to indicate scaleCommon coin diameters for reference:
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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 Anne Burgess 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: Anne Burgess
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 18:31, 20 February 2011 | | 640 × 427 (295 KB) | GeographBot | == {{int:filedesc}} == {{Information |description={{en|1=Accretionary Lapilli These little concentric rings are cross-sections of accretionary lapilli. They are formed when ash particles erupted from a volcano in moist clouds, and they accrete like hailst |
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