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Image: Missouri River in winter downstream from Yankton, South Dakota

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Description: The Missouri River in winter downstream from Yankton, South Dakota, with Nebraska below and South Dakota above. Bottom left is bluff Quaternary loess (soil deposited by wind) and other buried soil over over Cretaceous Niobrara Formation chalk and Carlile shale. All of this was under the far edge of the Wisconsin Ice Sheet, which departed around 50,000 years ago.
Title: Missouri River in winter downstream from Yankton, South Dakota
Credit: 2016_12_29_ewr-lax_096
Author: Doc Searls from Santa Barbara, USA
Usage Terms: Creative Commons Attribution 2.0
License: CC BY 2.0
License Link: https://creativecommons.org/licenses/by/2.0
Attribution Required?: Yes

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