National Geologic Map Database
General Information
- Title: Early Silurian formations of southeastern Pennsylvania
- Author(s): Swartz, C.K., and Swartz, F.M.
- Publishing Organization: Geological Society of America
- Series and Number: Bulletin v. 42 no. 3 [p. 621-661]
- Publication Date: 1931
- Map Scale: 1:5,700,000
- Cross Section: Yes
- North Latitude: 41° 49' 37" N (41.8269)
- South Latitude: 39° 39' 10" N (39.6529)
- East Longitude: 74° 7' 35" W (-74.1263)
- West Longitude: 78° 37' 30" W (-78.6250)
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