File:Sandstone (Guilmette Formation, Upper Devonian; Bactrian Mountain, Lincoln County, Nevada, USA) 1.jpg

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English: Quartzose sandstone from the Devonian of Nevada, USA.

This sample is from the Guilmette Formation, a heterolithic unit having carbonates, sandstones, and evaporites. The sandstones in the unit are often referred to as "quartzite", but they have not been metamorphosed.

Stratigraphy: unit 2, upper part of the Upper Member, Guilmette Formation, upper Frasnian Stage, lower Upper Devonian

Locality: Bactrian Mountain East section - eastern shoulder of "5230 peak" at Bactrian Mountain, Mt. Irish Range, ~between the towns of Rachel and Alamo, western Lincoln County, southern Nevada, USA (vicinity of 37° 31' 42.12" North latitude, 115° 19’ 37.25" West longitude)

Reference on the geology of this section:

Morrow (1997) - Courier Forschungsinstitut Senckenberg 219.
Date
Source https://www.flickr.com/photos/47445767@N05/50656201556/
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@N05/50656201556. It was reviewed on 30 November 2020 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0.

30 November 2020

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current23:01, 30 November 2020Thumbnail for version as of 23:01, 30 November 20202,596 × 1,381 (2.33 MB)Ser Amantio di Nicolao (talk | contribs)Uploaded a work by James St. John from https://www.flickr.com/photos/47445767@N05/50656201556/ with UploadWizard

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