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File:Granodiorite (Barre Pluton, Devonian, ~380 Ma; Rock of Ages Quarry, Graniteville, Vermont, USA) 7.jpg

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English: Granodiorite in the Devonian of Vermont, USA.

The rock seen here is at a New England quarry that targets decorative stone-quality material. It is a type of "gray granite" in the retail trade, but it's really granodiorite. It has less quartz than a true granite. This material is derived from the Barre Granite (Barre Pluton) of Vermont. The name is pronounced "berry". This igneous intrusion formed by partial melting of Silurian-Devonian sedimentary rocks that had been folded and regionally metamorphosed during the Acadian Orogeny in eastern America. The rocks here contain quartz, feldspar, and biotite mica.

Geologic unit: Barre Pluton (Barre Granite), New Hampshire Plutonic Series/Suite, Devonian, ~380 Ma

Locality: Rock of Ages Quarry, Graniteville, north-central Vermont, USA (44° 08’ 35.57” North latitude, 72° 28’ 49.78” West longitude)
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Source https://www.flickr.com/photos/47445767@N05/49643289487/
Author James St. John

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This file is licensed under the Creative Commons Attribution 2.0 Generic license.
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This image was originally posted to Flickr by James St. John at https://flickr.com/photos/47445767@N05/49643289487 (archive). It was reviewed on 10 March 2020 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0.

10 March 2020

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current14:39, 10 March 2020Thumbnail for version as of 14:39, 10 March 20203,008 × 2,000 (4.94 MB)Ser Amantio di Nicolao (talk | contribs)Uploaded a work by James St. John from https://www.flickr.com/photos/47445767@N05/49643289487/ with UploadWizard

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