National Geologic Map Database
General Information
- Title: Geology and oil gas possibilities of Trenton and Black River limestones of the Michigan Basin, Michigan and adjacent areas
- Author(s): Cohee, G.V.
- Publishing Organization: U.S. Geological Survey
- Series and Number: Oil and Gas Investigations Chart OC-11
- Publication Date: 1945
- Map Scale: 1:4,752,000
- Cross Section: None
- North Latitude: 47° 0' 0" N (47.0000)
- South Latitude: 39° 50' 0" N (39.8333)
- East Longitude: 81° 45' 30" W (-81.7583)
- West Longitude: 89° 30' 0" W (-89.5000)
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