The Mississippi River records glacial-isostatic deformation of North America (6 of 7) (IMAGE)

American Association for the Advancement of Science (AAAS)

The Mississippi River records glacial-isostatic deformation of North America (6 of 7)

Caption

The newly integrated Mississippi River cut deeply into the uplifting bedrock at the ice-sheet margin. When the ice-sheet retreated and the land subsided, evidence of this erosion was preserved in a buried waterfall and upstream-sloping stretch of the Mississippi bedrock valley floor. This material relates to a paper that appeared in the Jan. 30th, 2019, issue of Science Advances, published by AAAS. The paper, by A.D. Wickert at University of Minnesota in Minneapolis, MN, and colleagues was titled, "The Mississippi River records glacial-isostatic deformation of North America."

Credit

[Credit: A. Wickert]

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