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General Information

  • Title: Summary of isotopic age determinations in Pennsylvania
  • Author(s): Lapham, D.M., and Root, S.I.
  • Publishing Organization: Pennsylvania Geological Survey
  • Series and Number: Information Circular 70 [29 p.]
  • Publication Date: 1971
  • Map Scale: 1:1,425,600
  • Cross Section: None
  • North Latitude: 40° 3' 13" N (40.0536)
  • South Latitude: 39° 56' 29" N (39.9413)
  • East Longitude: 77° 12' 3" W (-77.2008)
  • West Longitude: 78° 0' 0" W (-78.0000)
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