File:Pyroclastic breccia - geograph.org.uk - 478073.jpg
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[edit]DescriptionPyroclastic breccia - geograph.org.uk - 478073.jpg |
English: Pyroclastic breccia Three very knowledgeable people kindly gave their expert thoughts on what this is. All three said it was a pyroclastic breccia.
The following is my abridged version of their emails and any errors are mine alone. Basically what you have here is a pyroclastic breccia consisting of angular blocks of sedimentary rock and maybe even some ragged to blobby bombs of pale basalt. The bluey grey tuffaceous matrix is probably mostly finely comminuted sediment, the local country rock is largely limestones and mudstones but maybe this has some bluish chlorite, some carbonaceous material perhaps or just a blue cast to the photograph. Thanks to ... Professor Barry Dawson Professor Brian Upton Dr David Stephenson and special thanks to Anne Burgess for making the contacts. |
Date | |
Source | From geograph.org.uk |
Author | Jim Bain |
Attribution (required by the license) InfoField | Jim Bain / Pyroclastic breccia / |
InfoField | Jim Bain / Pyroclastic breccia |
Camera location | 56° 12′ 07″ N, 2° 46′ 27″ W ![]() ![]() | View this and other nearby images on: OpenStreetMap | ![]() |
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Object location | 56° 12′ 07″ N, 2° 46′ 25″ W ![]() ![]() | View this and other nearby images on: OpenStreetMap | ![]() |
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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 Jim Bain and is licensed for reuse under the Creative Commons Attribution-ShareAlike 2.0 license.
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current | 23:06, 4 February 2011 | ![]() | 640 × 424 (112 KB) | GeographBot (talk | contribs) | == {{int:filedesc}} == {{Information |description={{en|1=Pyroclastic breccia Three very knowledgeable people kindly gave their expert thoughts on what this is. All three said it was a pyroclastic breccia. The following is my abridged version of their e |
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