Wisconsin Rocks!: A Guide to Geologic Sites in the Badger State
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In the early 1800s, fortune-seeking miners in Wisconsin's lead district dug thousands of pits, earning the nickname "badgers" because their excavations resembled the holes dug by the burrowing mammal. Early settlers sought out other natural resources as well, with limestone quarried from the Niagara Escarpment along Lake Michigan, iron mined in the Penokee Range, and copper discovered in glacial deposits, eroded from Midcontinental Rift basalts near Lake Superior. Not only is Wisconsin's ge...






















