National Geologic Map Database
General Information
- Title: Age of the Bedford Shale, Berea Sandstone, and Sunbury Shale in the Appalachian and Michigan basins, Pennsylvania, Ohio, and Michigan
- Author(s): de Witt, Wallace, Jr.
- Publishing Organization: U.S. Geological Survey
- Series and Number: Bulletin 1294-G [p. G1-G11]
- Larger Work: Contributions to stratigraphy, 1969
- Publication Date: 1970
- Map Scale: 1:8,161,940
- Cross Section: None
- North Latitude: 41° 37' 53" N (41.6314)
- South Latitude: 38° 43' 22" N (38.7228)
- East Longitude: 75° 45' 28" W (-75.7578)
- West Longitude: 81° 58' 17" W (-81.9714)
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* Names and boundaries are not necessarily authoritative, and are provided here solely for general orientation.