Philadelphia Geological Society

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Geologic History of the Philadelphia Region

 

Two excellent explanations of the geologic history of Pennsylvania and the northeastern United States are:

 

Barnes, J. H., and W. D. Sevon, The Geological Story of Pennsylvania, Educational Series 4, 44 pp., Pennsylvania Geological Survey, Harrisburg, 1996.

 

Paleontological Research Institution, Teacher-Friendly Guide to the Geology of the Northeast.

 

 

Last revised: 12 September 2016