File:1.36 Ga granite dikes in amphibolite (Blue Creek East Rt. 50 roadcut, Gunnison Uplift, Colorado, USA) 2.jpg

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English: Igneous dikes in the Precambrian of Colorado, USA.

Igneous dikes are planar to irregularly-planar igneous intrusions that cut across country rocks. They can be thin or extremely thick & they can be vertical or obliquely-oriented.

The pink-speckled, moderately wide, subvertical body and the thin, oblique bodies are 1.36 billion year old granite dikes that are intruding through amphibolite, a metamorphic rock dominated by the mineral amphibole.

Locality: Blue Creek East outcrop - roadcut along Rt. 50 at milepost 125, Gunnison Uplift, western Colorado, USA
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Source https://www.flickr.com/photos/47445767@N05/8358769163/
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@N05/8358769163. It was reviewed on 18 October 2020 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0.

18 October 2020

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current02:26, 18 October 2020Thumbnail for version as of 02:26, 18 October 20203,008 × 2,000 (2.85 MB)Ser Amantio di Nicolao (talk | contribs)Uploaded a work by James St. John from https://www.flickr.com/photos/47445767@N05/8358769163/ with UploadWizard

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