File:Crushed Sioux Quartzite (upper Paleoproterozoic, 1.65-1.70 b.y.) in concrete (Chamberlain, South Dakota, USA) 5.jpg

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English: The pinkish-colored chunks in this concrete are pieces of quartzite. The gravel comes from a Precambrian-aged unit called the Sioux Quartzite. Good outcrops occur at Falls Park along the Big Sioux River in the town of Sioux Falls, southeastern South Dakota. Quartzite quarries occur in that town and elsewhere, including southwestern Minnesota.

Stratigraphy: Sioux Quartzite, upper Paleoproterozoic, 1.65-1.70 Ga

Locality: parking lot at the Lewis and Clark Interpretive Center (rest stop & visitor center), Chamberlain, South Dakota, USA
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Source https://www.flickr.com/photos/47445767@N05/53006527180/
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@N05/53006527180. It was reviewed on 29 June 2023 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0.

29 June 2023

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current16:05, 29 June 2023Thumbnail for version as of 16:05, 29 June 20234,000 × 3,000 (7.31 MB)Ser Amantio di Nicolao (talk | contribs)Uploaded a work by James St. John from https://www.flickr.com/photos/47445767@N05/53006527180/ with UploadWizard

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