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Sandstone like this was deposited in streams and rivers during the Cretaceous period.
Originally uploaded in Integrating Research and Education:Montana Geoheritage Project:Montana-Yellowstone Geologic Field Guide Database.

Image 179451 is a 2448 by 3264 pixel WebP
Uploaded: Mar5 18

Last Modified: 2018-04-05 20:15:18
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Willie Freimuth
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