File:Metapyroxenite from the Ophiolite on Unst in Shetland Islands in Scotland.jpg
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Summary
| Description |
English: Metapyroxenite (8.0 cm across) composed of chromian diopside pyroxene ((Ca,Cr)MgSi2O6 - calcium chromium magnesium silicate). Because this pyroxenite (a clinopyroxenite, really) is all diopside, a better rock name is diopsidite.
This is from an ophiolite complex (Shetland Ophiolite Complex; a.k.a. Unst Ophiolite Complex) exposed on the island of Unst in the northeastern Shetland Islands (in the North Sea, between Scotland & Norway). The rocks in the area represent ~basal crustal rocks metamorphosed during the Caledonian Orogeny (~425-500 million years ago). Published research indicates that the original rocks were from a late Neoproterozoic-Cambrian intracontinental, ocean-floored rift basin. This metapyroxenite is from the upper pyroxenite layer of the Unst Ophiolite Complex. Locality: outcrop at Skeo Taing, shores of Balta Sound, eastern margin of island of Unst, northeastern Shetland Islands, Scotland. |
| Date | |
| Source | https://www.flickr.com/photos/jsjgeology/14821969772/in/album-72157646104447616/ |
| Author | James St. John (jsj1771) (https://www.flickr.com/people/jsjgeology/) |
Licensing
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This image was originally posted to Flickr by James St. John at https://flickr.com/photos/47445767@N05/14821969772 (archive). It was reviewed on 11 November 2018 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0. |
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File history
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 22:22, 11 November 2018 | | 980 × 619 (145 KB) | GeoWriter | User created page with UploadWizard |
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