National Geologic Map Database
Product Description Page
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Title: Geology of the Dubuque North quadrangle, Iowa - Wisconsin - Illinois
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Author(s): Whitlow, J.W., and Brown, C.E.
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Publishing Organization: U.S. Geological Survey
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Series and Number: Bulletin 1123-C
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Larger Work: Geology of parts of the upper Mississippi Valley zinc-lead district
- Publication Date: 1963
- Map Scale: 1:24,000
- Cross Section: None
- North Latitude: 42° 37' 30" N (42.6250)
- South Latitude: 42° 30' 0" N (42.5000)
- East Longitude: 90° 37' 30" W (-90.6250)
- West Longitude: 90° 45' 0" W (-90.7500)
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* Names and boundaries are not necessarily authoritative, and are provided here solely for general orientation.