Wikimedia Commons

File:Garnet-biotite rock (alteration halo around magnetite-rich meta-iron formation) (Archean, metamorphism at ~3.2 Ga & ~2.8 Ga; Quad Creek section - roadcut along the Beartooth Highway, Beartooth Mountains, Montana, USA) 2.jpg

Original file ‎(2,595 × 2,675 pixels, file size: 6.21 MB, MIME type: image/jpeg)

Captions

Captions

Add a one-line explanation of what this file represents

Summary

edit
Description
English: Garnet-biotite rock in the Precambrian of Montana, USA.

This rock is dominated by red garnet crystals and black biotite mica. It is part of an alteration halo around an outcrop of Archean-aged, magnetite-rich meta-iron formation. This material, and the meta-iron formation (depositional age ~3.3 Ga), formed during two metamorphic episodes in the Precambrian: 1) about 3.2 Ga (granulite-facies metamorphism); and 2) about 2.8 Ga (upper amphibolite facies metamorphism).

Locality: Quad Creek section (= locality of Mueller et al., 1987) - roadcut on southern side of Beartooth Highway (Rt. 212), immediately west of Quad Creek, between milepost 50 and milepost 51, southern side of Rock Creek Canyon, just north of the eroded edge of Beartooth Plateau, southwest of the town of Red Lodge, Beartooth Mountains, southern Montana, USA (45° 01' 41.27" North latitude, 109° 24' 55.31" West longitude)

Some info. from:

Mueller et al. (1987) - Geological Society of America Centennial Field Guide, Rocky Mountain Section, pp. 75-76.

Maier (2011) - Geology and Geochemistry of Hadean Zircon-Bearing Supracrustals from Quad Creek, Eastern Beartooth Mountains, Montana, USA. M.S. Thesis. University of Colorado. 59 pp.
Date
Source https://www.flickr.com/photos/47445767@N05/52615143730/
Author James St. John

Licensing

edit
w:en:Creative Commons
attribution
This file is licensed under the Creative Commons Attribution 2.0 Generic license.
You are free:
  • to share – to copy, distribute and transmit the work
  • to remix – to adapt the work
Under the following conditions:
  • attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
This image was originally posted to Flickr by James St. John at https://flickr.com/photos/47445767@N05/52615143730. It was reviewed on 9 January 2023 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0.

9 January 2023

File history

Click on a date/time to view the file as it appeared at that time.

Date/TimeThumbnailDimensionsUserComment
current13:35, 9 January 2023Thumbnail for version as of 13:35, 9 January 20232,595 × 2,675 (6.21 MB)Ser Amantio di Nicolao (talk | contribs)Uploaded a work by James St. John from https://www.flickr.com/photos/47445767@N05/52615143730/ with UploadWizard

You cannot overwrite this file.

There are no pages that use this file.

Metadata

This file contains additional information such as Exif metadata which may have been added by the digital camera, scanner, or software program used to create or digitize it. If the file has been modified from its original state, some details such as the timestamp may not fully reflect those of the original file. The timestamp is only as accurate as the clock in the camera, and it may be completely wrong.

Retrieved from "https://commons.wikimedia.org/w/index.php?title=File:Garnet-biotite_rock_(alteration_halo_around_magnetite-rich_meta-iron_formation)_(Archean,_metamorphism_at_~3.2_Ga_%26_~2.8_Ga;_Quad_Creek_section_-_roadcut_along_the_Beartooth_Highway,_Beartooth_Mountains,_Montana,_USA)_2.jpg&oldid=724068048"