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Summary
DescriptionDykes at Garthna Geo, Yesnaby - geograph.org.uk - 490020.jpg
English: Dykes at Garthna Geo, Yesnaby a composite dyke cuts through the hard jointed blocks, with a camptonite centre and bostonite borders, that has been dated to 313±4 Ma see [1]. This is a vertical drop, west-facing.
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 Colin Smith and is licensed for reuse under the Creative Commons Attribution-ShareAlike 2.0 license.
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== {{int:filedesc}} == {{Information |description={{en|1=Dykes at Garthna Geo, Yesnaby Two volcanic dykes cut through the hard jointed blocks. This is a vertical drop, west-facing.}} |date=2007-06-22 |source=From [http://www.geograph.org.uk/photo/490020 g