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Bedrock Stratigraphic Units in Wisconsin
Large and small posters of our bedrock stratigraphy chart. (Also available as a page-size publication with a brief explanation on how to read the rock column.) -
Wisconsin's Geologic Past
At different times in the past three billion years, mountains and volcanoes stood tall in Wisconsin, shallow seas covered much of the state, and glaciers plowed across the landscape. This educational poster vividly brings our past to life. Ideal for classrooms. Size: 27 x 39 inches. -
Bedrock Stratigraphic Units in Wisconsin
Chart showing the layers of rock (stratigraphy) present in Wisconsin, their geologic ages, and the associated rock units. The page-size version explains how to read and interpret this complex diagram. (The stratigraphic column is also available as a poster, see WOFR2006-06.)