Explore Wisconsin’s geologic past, from our bedrock to the Ice Age and beyond.
This section provides an overview of Wisconsin’s geology, including an introduction to our landscape features and how geology shaped our landscape. You can learn how to read a geologic map, find information on Wisconsin’s minerals and fossils, and see an overview of iron and frac sand mining. You’ll also find videos of public talks our staff have given Wisconsin’s geology and blog posts about our geologic research.
Landscape features of Wisconsin
WGNHS geology research & talks
Researching erosion along Lake Michigan
March 19, 2024Aerial survey in northeast Wisconsin
January 11, 2021- More