National Geologic Map Database
Product Description Page
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Title: Revisions of stratigraphic nomenclature within the Keweenawan Supergroup of northern Michigan
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Author(s): Cannon, W.F., and Nicholson, S.W.
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Publishing Organization: U.S. Geological Survey
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Series and Number: Bulletin 1970-A
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Larger Work: Contributions to the geology and mineral resources of the midcontinent rift system
- Publication Date: 1992
- Map Scale: 1:1,270,000
- Cross Section: None
- North Latitude: 47° 30' 0" N (47.5000)
- South Latitude: 46° 22' 1" N (46.3670)
- East Longitude: 87° 26' 46" W (-87.4460)
- West Longitude: 90° 23' 46" W (-90.3960)
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* Names and boundaries are not necessarily authoritative, and are provided here solely for general orientation.