National Geologic Map Database
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
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Additional Resources
- Links and Downloads:
- Publication
- NOTE: This product is only available online. For more information, please contact:
- Pennsylvania Geological Survey
- 3240 Schoolhouse Rd.
- Middletown, PA 17057-3534
- Phone: (717) 702-2017
* Names and boundaries are not necessarily authoritative, and are provided here solely for general orientation.