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Olmsted County, Minnesota

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I stumbled upon this while researching Brachiopods and thought it deserved a mention. It's a chart with the stratigraphy of Olmsted County, Minnesota but applies to most of Southeast Minnesota. There's also a nice chart showing the geological time scale of Minnesota.

Charts from "Environmental Geology of Olmsted County, Minnesota" R. K. Hogberg, 1973

Generalized Geologic Secton


Geologic Time Chart


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