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 download or as a beautifully bound desk reference.
Large downloads come in ZIP archives. You will need an application capable of unpacking ZIP archives, such as WinZIP, WinRAR, or 7-zip.