National Geologic Map Database
General Information
- Title: Lower Keweenawan volcanic rocks of Michigan and Wisconsin
- Author(s): Hubbard, H.A.
- Publishing Organization: U.S. Geological Survey
- Series and Number: Journal of Research of the U.S. Geological Survey v. 3, no. 5, p.529-541.
- Publication Date: 1975
- Map Scale: 1:62,500
- Cross Section: Yes
- North Latitude: 46° 32' 10" N (46.5360)
- South Latitude: 46° 27' 47" N (46.4630)
- East Longitude: 90° 0' 0" W (-90.0000)
- West Longitude: 90° 13' 8" W (-90.2190)
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- U.S. Geological Survey
- USGS Information Services
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- Denver, CO 80225
- Phone: (303) 202-4700 or 1-888-ASK-USGS
- Fax: (303) 202-4710
* Names and boundaries are not necessarily authoritative, and are provided here solely for general orientation.