File:Connemara Lissoughter Marble.jpg
![File:Connemara Lissoughter Marble.jpg](https://upload.wikimedia.org/wikipedia/commons/thumb/d/d7/Connemara_Lissoughter_Marble.jpg/800px-Connemara_Lissoughter_Marble.jpg?20190814115927)
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Summary
editDescriptionConnemara Lissoughter Marble.jpg |
English: Irish Green Marble - calcsilicate marble from the Ordovician of Ireland.
In the commercial decorative stone trade, “marble” is used to refer to a wide variety of relatively soft rocks (H = 3 to 5) that will take a fine polish. These include true marbles and rocks that aren’t marbles, such as limestones, tectonic breccias, and serpentinites. The true marbles are calcitic, crystalline-textured metamorphic rocks. They form by intermediate- to high-grade metamorphism of limestones. They have been used for millennia as building and monument stones (e.g., ancient Greek & Roman archaeological sites and Michelangelo’s sculptures). The attractive greenish-colored rock shown here is a marble rich in silicate minerals, principally serpentine. Metamorphic rocks dominated by both silicate and carbonate minerals are called "calcsilicates". Serpentine marbles usually form by metamorphism of dolostones. This calcsilicate is Ordovician in age, but the precursor (protolith - the original rock before metamorphism) was Neoproterozoic in age. Stratigraphy: Connemara Marble Formation, upper Appin Group, Dalradian Supergroup, Neoproterozoic; metamorphism during the Ordovician, at ~466 to 478 Ma Locality: attributable to a quarry in the Derryclare-Lissoughter-Recess area, western Galway County, western Ireland |
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Source | https://www.flickr.com/photos/jsjgeology/33886019201/ |
Author | James St. John |
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This image was originally posted to Flickr by James St. John at https://flickr.com/photos/47445767@N05/33886019201 (archive). It was reviewed on 14 August 2019 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0. |
14 August 2019
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current | 11:59, 14 August 2019 | ![]() | 7,296 × 5,152 (13.87 MB) | Britishfinance (talk | contribs) | User created page with UploadWizard |
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Camera manufacturer | A08447065B870046 |
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Camera model | Handy Scanner |
ISO speed rating | 918 |
Width | 7,296 px |
Height | 5,152 px |
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Pixel composition | RGB |
Orientation | Normal |
Number of components | 3 |
Horizontal resolution | 600 dpi |
Vertical resolution | 600 dpi |
Software used | Adobe Photoshop Elements 13.0 (Macintosh) |
File change date and time | 12:28, 13 April 2017 |
Exif version | 2.2 |
Color space | sRGB |
Date and time of digitizing | 14:55, 1 January 2015 |
Date metadata was last modified | 08:28, 13 April 2017 |
Unique ID of original document | 00516AEC6489F0C3C726B809A04BFB9B |
IIM version | 24,704 |