National Geologic Map Database
Product Description Page
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Title: Preliminary digital geologic map of the Penokean (Early Proterozoic) continental margin in northern Michigan and Wisconsin
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Author(s): Cannon, W.F., and Ottke, Doug
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Publishing Organization: U.S. Geological Survey
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Series and Number: Open-File Report OF-99-547
- Publication Date: 1999
- Cross Section: None
- North Latitude: 47° 0' 0" N (47.0000)
- South Latitude: 45° 30' 0" N (45.5000)
- East Longitude: 87° 0' 0" W (-87.0000)
- West Longitude: 91° 30' 0" W (-91.5000)
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* See base map disclaimer below.
* Names and boundaries are not necessarily authoritative, and are provided here solely for general orientation.