File:Aplite (Laramie Anorthosite Complex, Mesoproterozoic; Sybille Canyon, Laramie Range, Wyoming, USA).jpg
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| Description |
English: Aplite from the Precambrian of Wyoming, USA.
Igneous dikes are planar to irregularly-planar intrusions that cut across country rocks. They can be thin or extremely thick; they can be vertically- or obliquely-oriented. The rock seen here is from a zoned aplite-pegmatite dike that intruded anorthosite. Aplite is a finely-crystalline dike rock having a granitic composition. Pegmatite is a very coarsely-crystalline igneous rock, usually granitic. Host rocks: Laramie Anorthosite Complex, Middle Proterozoic, ~1.4 Ga Locality: roadcut on the northern side of Route 34, ~0.9 to 1.0 miles west of milepost 25, southwest of Poe Mountain & northeast of Morton Pass, Sybille Canyon, Laramie Range, southeastern Wyoming, USA |
| Date | |
| Source | https://www.flickr.com/photos/47445767@N05/51139354787/ |
| 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@N05/51139354787. It was reviewed on 6 May 2021 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0. |
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 19:23, 6 May 2021 | | 3,077 × 1,529 (3.42 MB) | Ser Amantio di Nicolao (talk | contribs) | Uploaded a work by James St. John from https://www.flickr.com/photos/47445767@N05/51139354787/ with UploadWizard |
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