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Tag: stromatolites

Stromatolitic carbonates, Shakopee Formation, Ordovician Prairie du Chien Group, Northfield, MN

March 20, 2020March 21, 2020 by Michael Smith, posted in Sedimentary Geology

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cannon_river_stroms_2

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Early Ordovician carbonates of the Shakopee Formation of the Prairie du Chien Group exposed in the valleys of the Cannon River and Lyman Creek in Northfield, MN.

Tagged carbonate, Minnesota, Northfield, Ordovician, Prairie du Chien, stromatolites

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