This fact sheet (also available in two poster sizes) provides a handy list of Wisconsin's rock layers and a primer on reading the rock column. The page-size version was updated in 2011. more…

The state's golden sands have inspired Wisconsin's version of a gold rush. This 2-page fact sheet shows where sandstone formations occur in Wisconsin, where frac sand is being mined and processed (as of December 2011), why our sand is so popular, and how it's being used.

The Ice Age National Scenic Trail meanders across the state through scenic glacial terrain dotted with lakes, steep hills, and long, narrow ridges. This beautiful new book gives an overview of Wisconsin's geology and details geological features along each segment of the trail and at each of the nine National Ice Age Scientific Reserve sites. more…

For over 2 million years, glaciers pushed scoured parts of Wisconsin. But it is the most recent event, which began about 30,000 years ago, that is highly visible today. Glaciation of Wisconsin focuses on this most recent ice advance, telling the story primarily through maps and figures. more…

Our information circulars cover topics ranging from the geology and hydrogeology of a county to the mineral resources of the state. The complete collection is now available online. more…

A map and short fact sheet describing the types of iron ore, a brief overview of iron mining in Wisconsin, and development opportunities. more…

This 180-page book marks the first update in over 20 years to the collection of formal definitions of Wisconsin's Pleistocene units. Contains over 100 color maps, photographs, and figures as well as an extensive list of references. Available as a free downloadable PDF or as a beautifully bound desk reference. more…

This newly released report traces the advances and retreats of glaciers through Sheboygan County in eastern Wisconsin. Includes a colorful geologic map of the county and cross sections showing what lies beneath the surface. more…

Available formats: print, PDF, digital data (GIS), and CD-ROM (contains digital data and PDFs)

From shallow seas, glaciers, volcanoes, and mountains to missing dinosaurs, this poster brings Wisconsin's geologic past to life. Fourth graders (and older) will learn about our changing landscapes, the age of our rocks, and the kinds of rocks and fossils that are beneath our feet. more…